Merge pull request #300 from Kitzanos/enhance-api-logs-prod

Cherry-pick (Enhance API Logging for Better Tracking)

src/main/java/net/gepafin/tendermanagement/dao/ApplicationAmendmentRequestDao.java

@@ -159,6 +159,7 @@ public class ApplicationAmendmentRequestDao {
         String file=applicationEvaluationEntity.getFile();
         String checkList=applicationEvaluationEntity.getChecklist();
         if(file != null){
+            log.info("Parsing evaluation file data for evaluationId={}", applicationEvaluationId);
             evaluationFileRequests=Utils.convertJsonStringToList(file,FieldRequest.class);
         }
         if(applicationEvaluationEntity.getEvaluationVersion().equals(EvaluationVersionEnum.V1.getValue())) {
@@ -326,6 +327,7 @@ public class ApplicationAmendmentRequestDao {
         applicationAmendmentRequestEntity.setNote(applicationAmendmentRequest.getNote());
         applicationAmendmentRequestEntity.setResponseDays(applicationAmendmentRequest.getResponseDays());
         if(applicationAmendmentRequest.getResponseDays()==null || applicationAmendmentRequest.getResponseDays() < 0){
+            log.warn("Invalid responseDays received: {}", applicationAmendmentRequest.getResponseDays());
             throw new CustomValidationException(Status.BAD_REQUEST,Translator.toLocale(GepafinConstant.RESPONSE_DAYS_NOT_NULL));
         }
         applicationAmendmentRequestEntity.setEndDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()).plusDays(applicationAmendmentRequest.getResponseDays()));
@@ -378,6 +380,8 @@ public class ApplicationAmendmentRequestDao {
                 userEntity.getHub().getId(),false);
         applicationAmendmentRequestEntity.setProtocol(protocolEntity);
         ApplicationAmendmentRequestEntity applicationAmendment = saveApplicationAmendmentRequestEntity(applicationAmendmentRequestEntity, null, VersionActionTypeEnum.INSERT);
+        log.info("Amendment request saved with ID={}", applicationAmendment.getId());
+
         String evaluationStatusType = applicationEvaluationEntity.getStatus();
         if (Boolean.FALSE.equals(evaluationStatusType.equals((ApplicationEvaluationStatusTypeEnum.SOCCORSO.getValue())))){
 //            applicationEvaluationEntity.setStatus(ApplicationEvaluationStatusTypeEnum.SOCCORSO.getValue());
@@ -416,7 +420,7 @@ public class ApplicationAmendmentRequestDao {
             loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldAssignedApplication).newData(assignedApplicationsEntity).build());
         }
 
-
+        log.info("Amendment creation process completed successfully for applicationId={}, evaluationId={}", applicationId, applicationEvaluationId);
         return applicationAmendment;
     }
     private void setAmendmentDocuments(String amendmentNotes, String amendmentFieldRequest,
@@ -507,7 +511,7 @@ public class ApplicationAmendmentRequestDao {
     }
 
     public DocumentResponseBean createDocumentResponseBean(String documentId) {
-
+        log.info("Initiating document response creation for documentId={}", documentId);
         if (!StringUtils.isEmpty(documentId)) {
             Optional<DocumentEntity> documentEntity = documentRepository.findByIdAndNotDeleted(Long.valueOf(documentId));
             if(documentEntity.isPresent()){
@@ -671,7 +675,9 @@ public class ApplicationAmendmentRequestDao {
     }
 
     public List<GetAllAmendmentResponseBean> getAllApplicationAmendmentRequest(HttpServletRequest request, Long userId) {
+        log.info("Entering getAllApplicationAmendmentRequest with userId={}", userId);
         if (validator.checkIsPreInstructor() && userId == null) {
+            log.warn("Access denied: Pre-instructor must provide userId for amendment request retrieval.");
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.USER_ID_NOT_NULL_MSG));
         }
         if (userId != null) {
@@ -714,9 +720,11 @@ public class ApplicationAmendmentRequestDao {
             isBeneficiary=true;
         }
         if(Boolean.TRUE.equals(isBeneficiary) && existingApplicationAmendment.getStatus().equals(ApplicationAmendmentRequestEnum.RESPONSE_RECEIVED.getValue())){
+            log.warn("Permission denied: Beneficiary tried to update amendment ID {} with status RESPONSE_RECEIVED", id);
             throw new CustomValidationException(Status.VALIDATION_ERROR,Translator.toLocale(GepafinConstant.PERMISSION_DENIED));
         }
         if(Boolean.FALSE.equals(isBeneficiary) && existingApplicationAmendment.getStatus().equals(ApplicationAmendmentRequestEnum.AWAITING.getValue())){
+            log.warn("Permission denied: Non-beneficiary tried to update amendment ID {} with status AWAITING", id);
             throw new CustomValidationException(Status.VALIDATION_ERROR,Translator.toLocale(GepafinConstant.PERMISSION_DENIED));
         }
 
@@ -739,10 +747,12 @@ public class ApplicationAmendmentRequestDao {
 		}
         existingApplicationAmendment.setUpdatedDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()));
         if(updateRequest.getAmendmentDocuments()!=null && Boolean.FALSE.equals(updateRequest.getAmendmentDocuments().isEmpty())) {
+            log.debug("Setting amendment documents for amendment ID: {}", id);
             setAmendmentDocuments(updateRequest.getAmendmentNotes(),updateRequest.getAmendmentDocuments(), existingApplicationAmendment);
         }
         ApplicationAmendmentRequestEntity updatedApplicationAmendment = saveApplicationAmendmentRequestEntity(existingApplicationAmendment,oldApplicationAmendmentEntity,VersionActionTypeEnum.UPDATE);
         ApplicationAmendmentRequestResponse response = convertEntityToResponse(updatedApplicationAmendment,false);
+        log.info("Successfully updated ApplicationAmendmentRequest with ID: {}", id);
         log.info("Application Amendment updated successfully: {}", response);
         return response;
     }
@@ -1038,6 +1048,7 @@ public class ApplicationAmendmentRequestDao {
 
 
     public List<ApplicationAmendmentRequestResponse> getAllAmendmentRequestByBeneficiaryId(Long beneficiaryUserId) {
+        log.info("Fetching all amendment requests for beneficiaryUserId={}", beneficiaryUserId);
         UserEntity userEntity = userService.validateUser(beneficiaryUserId);
         List<ApplicationAmendmentRequestEntity> entities =
                 applicationAmendmentRequestRepository.findByUserId(beneficiaryUserId);
@@ -1057,6 +1068,8 @@ public class ApplicationAmendmentRequestDao {
                 existingApplicationAmendment.getApplicationEvaluationEntity().getId()
         );
 
+        log.debug("Found {} amendment requests for ApplicationEvaluationId={}", amendmentRequestList.size(), existingApplicationAmendment.getApplicationEvaluationEntity().getId());
+
         // Check if this is the last amendment being closed
         boolean isLastRemaining = amendmentRequestList.stream()
                 .filter(amendment -> !amendment.getId().equals(id)) // Exclude the current amendment
@@ -1074,6 +1087,8 @@ public class ApplicationAmendmentRequestDao {
         }
         ApplicationAmendmentRequestResponse response = convertEntityToResponse(updatedApplicationAmendment,false);
 
+        log.info("Updated amendment status to CLOSE for amendment ID: {}", id);
+
         List<ApplicationAmendmentRequestEntity> amendmentRequests = applicationAmendmentRequestRepository.findAllByApplicationEvaluationIdAndIsDeletedFalse(
                 existingApplicationAmendment.getApplicationEvaluationEntity().getId());
         Boolean allClosed = amendmentRequests.stream().allMatch(amendment -> (amendment.getStatus().equals(ApplicationAmendmentRequestEnum.CLOSE.getValue()) || amendment.getStatus().equals(ApplicationAmendmentRequestEnum.EXPIRED.getValue())));
@@ -1081,16 +1096,17 @@ public class ApplicationAmendmentRequestDao {
         ApplicationEntity oldApplicationEntityData = Utils.getClonedEntityForData(application);
         if (Boolean.TRUE.equals(allClosed)) {
             existingApplicationAmendment.getApplicationEvaluationEntity().setStatus(ApplicationEvaluationStatusTypeEnum.OPEN.getValue());
-
             if (allClosed) {
                 ApplicationEvaluationEntity existingApplicationEvaluationEntity = existingApplicationAmendment.getApplicationEvaluationEntity();
 
                 ApplicationEvaluationEntity oldApplicationEvaluationEntity = Utils.getClonedEntityForData(existingApplicationEvaluationEntity);
                 existingApplicationEvaluationEntity.setStatus(ApplicationEvaluationStatusTypeEnum.OPEN.getValue());
                 applicationEvaluationRepository.save(existingApplicationAmendment.getApplicationEvaluationEntity());
+                log.info("Updated ApplicationEvaluation status to OPEN for ID: {}", existingApplicationEvaluationEntity.getId());
 
                 application.setStatus(ApplicationStatusTypeEnum.EVALUATION.getValue());
                 applicationRepository.save(application);
+                  log.info("Updated Application status to EVALUATION for Application ID: {}", application.getId());
                 AssignedApplicationsEntity assignedApplicationsEntity = assignedApplicationsDao.validateAssignedApplication(
                         existingApplicationAmendment.getApplicationEvaluationEntity().getAssignedApplicationsEntity().getId());
 
@@ -1098,7 +1114,7 @@ public class ApplicationAmendmentRequestDao {
                 existingApplicationAmendment.getApplicationEvaluationEntity().getAssignedApplicationsEntity().setStatus(AssignedApplicationEnum.OPEN.getValue());
 
                 assignedApplicationsEntity = assignedApplicationsRepository.save(existingApplicationAmendment.getApplicationEvaluationEntity().getAssignedApplicationsEntity());
-
+                log.info("Updated AssignedApplication status to OPEN for ID: {}", assignedApplicationsEntity.getId());
 
                 Map<String, String> placeHolders = notificationDao.sendNotificationToBeneficiary(application, NotificationTypeEnum.AMENDMENT_CLOSED);
 
@@ -1125,6 +1141,7 @@ public class ApplicationAmendmentRequestDao {
 
     public ApplicationAmendmentRequestResponse extendResponseDays(Long id, Long newResponseDays) {
         ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity = validatApplicationAmendmentRequestByStatus(id,ApplicationAmendmentRequestEnum.EXPIRED.getValue());
+                log.info("Extending response days for Application Amendment ID: {}, Additional Days: {}", id, newResponseDays);
 
         if (newResponseDays != null && newResponseDays > 0) {
             ApplicationAmendmentRequestEntity oldApplicationAmendmentEntity = Utils.getClonedEntityForData(applicationAmendmentRequestEntity);
@@ -1177,6 +1194,7 @@ public class ApplicationAmendmentRequestDao {
         ApplicationAmendmentRequestEntity existingApplicationAmendment = validateApplicationAmendmentRequest(id);
         ApplicationAmendmentRequestEntity oldApplicationAmendmentEntity = Utils.getClonedEntityForData(existingApplicationAmendment);
         if (Boolean.TRUE.equals(existingApplicationAmendment.getStatus().equals(ApplicationAmendmentRequestEnum.AWAITING.getValue())) && Boolean.TRUE.equals(statusTypeEnum.equals(ApplicationAmendmentRequestEnum.RESPONSE_RECEIVED))) {
+            log.info("Updating amendment ID {} status from {} to {}", id, existingApplicationAmendment.getStatus(), statusTypeEnum);
             existingApplicationAmendment.setStatus(ApplicationAmendmentRequestEnum.RESPONSE_RECEIVED.getValue());
             existingApplicationAmendment.setUpdatedDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()));
             applicationAmendmentRequestRepository.save(existingApplicationAmendment);
@@ -1191,8 +1209,12 @@ public class ApplicationAmendmentRequestDao {
 
     public EmailReminderResponse sendReminderEmail(Long amendmentId) {
 
+                log.info("Initiating reminder email process for Amendment ID: {}", amendmentId);
+
         ApplicationAmendmentRequestEntity amendment = applicationAmendmentRequestRepository.findByIdAndIsDeletedFalse(amendmentId)
-                .orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.APPLICATION_AMENDMENT_NOT_FOUND_MSG)));
+                .orElseThrow(() -> { log.error("Amendment not found with ID: {}", amendmentId);
+                    return new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.APPLICATION_AMENDMENT_NOT_FOUND_MSG));
+                });
 
         Optional<ApplicationEvaluationEntity> entityOptional = applicationEvaluationRepository.findByIdAndIsDeletedFalse(amendment.getApplicationEvaluationEntity().getId());
         EmailReminderResponse emailReminderResponse = new EmailReminderResponse();
@@ -1205,6 +1227,7 @@ public class ApplicationAmendmentRequestDao {
             String body = prepareBody(emailTemplate, amendment, beneficiaryUser);
             String email = beneficiaryUser.getEmail();
             if (Boolean.TRUE.equals(amendment.getIsEmail()) && email != null && !email.isEmpty()) {
+                log.info("Sending reminder email to: {}", email);
                 EmailLogRequest emailLogRequest = emailLogDao.createEmailLogRequest(emailTemplate.getEmailScenario(), RecipientTypeEnum.USER, beneficiaryUser.getId(), email,
                         beneficiaryUser.getId(), applicationEntity.getId(), amendment.getId(), applicationEntity.getCall().getId());
                 emailNotificationDao.sendMail(hub.getId(), subject, body, List.of(email), emailLogRequest);
@@ -1217,7 +1240,9 @@ public class ApplicationAmendmentRequestDao {
                 else{
                     emailReminderResponse.setEmailSendResponse(Collections.emptyList());
                 }
+                log.info("Reminder email sent successfully for Amendment ID: {}", amendmentId);
             } else {
+                log.warn("Beneficiary email not found or isEmail flag is false for Amendment ID: {}", amendmentId);
                 throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.BENEFICIARY_EMAIL_NOT_FOUND_MSG));
             }
         }
@@ -1303,7 +1328,9 @@ public class ApplicationAmendmentRequestDao {
         return response;
     }
 	private void softDeleteDocument(Long documentId) {
+        log.info("Initiating soft delete for Document ID: {}", documentId);
 		documentService.deleteFile(documentId);
+        log.info("Document ID: {} soft deleted successfully.", documentId);
 	}
 
 //    public PageableResponseBean<List<ApplicationAmendmentRequestResponse>> getApplicationAmendmentByPaginnation(Long userId, ApplicationAmendmentPaginationRequestBean applicationAmendmentPaginationRequestBean) {
@@ -1422,6 +1449,7 @@ public class ApplicationAmendmentRequestDao {
 //    }
 
     public PageableResponseBean<List<ApplicationAmendmentRequestViewResponse>> getApplicationAmendmentByPaginationByView(Long userId, ApplicationAmendmentPaginationRequestBean applicationAmendmentPaginationRequestBean) {
+        log.info("Fetching paginated application amendments for userId: {}", userId);
         Integer pageNo = null;
         Integer pageLimit = null;
         if (applicationAmendmentPaginationRequestBean.getGlobalFilters() != null) {
@@ -1453,6 +1481,7 @@ public class ApplicationAmendmentRequestDao {
         pageableResponseBean.setTotalRecords(entityPage.getTotalElements());
         pageableResponseBean.setPageSize(entityPage.getSize());
 
+        log.info("Paginated response prepared successfully for userId: {}", userId);
         return pageableResponseBean;
     }
     public Specification<ApplicationAmendmentRequestView> searchPaginationByView(Long userId,ApplicationAmendmentPaginationRequestBean applicationAmendmentPaginationRequestBean) {
@@ -1484,6 +1513,7 @@ public class ApplicationAmendmentRequestDao {
     private List<Predicate> getPredicatesByView(ApplicationAmendmentPaginationRequestBean amendmentPaginationRequestBean,
                                           CriteriaBuilder criteriaBuilder, Root<ApplicationAmendmentRequestView> root,Long userId) {
 
+        log.info("Building predicates for userId: {}", userId);
         Integer year = null;
         String search = null;
         Map<String, FilterCriteria> filters = new HashMap<>();
@@ -1503,6 +1533,7 @@ public class ApplicationAmendmentRequestDao {
             LocalDateTime startOfYear = LocalDateTime.of(filterYear, 1, 1, 0, 0);
             LocalDateTime endOfYear = LocalDateTime.of(filterYear, 12, 31, 23, 59, 59);
 
+            log.debug("Filtering by year between {} and {}", startOfYear, endOfYear);
 // Add the range comparison to filter records within the year
             predicates.add(criteriaBuilder.between(root.get(GepafinConstant.CREATED_DATE), startOfYear, endOfYear));
 

src/main/java/net/gepafin/tendermanagement/dao/ApplicationDao.java

@@ -211,13 +211,16 @@ public class ApplicationDao {
     public final Random random = new Random();
 
     public ApplicationResponseBean createApplication(HttpServletRequest request, ApplicationRequestBean applicationRequestBean, Long formId, Long applicationId) {
+        log.info("Starting createApplication: formId={}, applicationId={}", formId, applicationId);
         FormEntity formEntity = formService.validateForm(formId);
 //        callService.validatePublishedCall(formEntity.getCall().getId());
         validateFormFields(applicationRequestBean,formEntity);
         ApplicationEntity applicationEntity = validateApplication(applicationId);
         checkCallEndDate(applicationEntity.getCall());
         validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
+        log.info("Validated user-company association for company ID: {}", applicationEntity.getCompanyId());
         if(Boolean.FALSE.equals(applicationEntity.getStatus().equals(ApplicationStatusTypeEnum.DRAFT.getValue()))) {
+            log.warn("Application ID {} is not in DRAFT status", applicationId);
             throw new CustomValidationException(Status.BAD_REQUEST,Translator.toLocale(GepafinConstant.APPLICATION_NOT_IN_DRAFT_STATUS));
         }
         formService.validateFormField(applicationRequestBean.getFormFields(),applicationEntity,formEntity);
@@ -244,10 +247,12 @@ public class ApplicationDao {
     }
 
     public ApplicationFormEntity createApplicationFormEntity(ApplicationEntity application, FormEntity formEntity) {
+        log.info("Creating ApplicationFormEntity for applicationId: {}, formId: {}", application.getId(), formEntity.getId());
         ApplicationFormEntity applicationFormEntity = new ApplicationFormEntity();
         applicationFormEntity.setApplication(application);
         applicationFormEntity.setForm(formEntity);
         applicationFormEntity = saveApplicationFormEntity(applicationFormEntity);
+        log.info("Created ApplicationFormEntity with id: {}", applicationFormEntity.getId());
         return applicationFormEntity;
     }
 
@@ -299,6 +304,7 @@ public class ApplicationDao {
             List<DocumentResponseBean> documentResponseBeans = new ArrayList<>();
             if (fileUploadContent.isPresent()) {
                 String documentId = applicationFormFieldEntity.getFieldValue();
+                log.debug("Field is file upload/select type. Document IDs: {}", documentId);
                 if (documentId != null && !documentId.isEmpty()) {
                     documentResponseBeans = Arrays.stream(documentId.split(","))
                             .map(String::trim)
@@ -306,6 +312,7 @@ public class ApplicationDao {
                             .map(docId -> {
                                 DocumentEntity documentEntity = documentService.validateDocument(docId);
                                 if (Boolean.FALSE.equals(DocumentSourceTypeEnum.APPLICATION.getValue().equals(documentEntity.getSource()))) {
+                                    log.warn("Document {} source type invalid: {}", docId, documentEntity.getSource());
                                     throw new CustomValidationException(Status.NOT_FOUND,Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND));
                                 }
                                 return documentEntity;
@@ -331,6 +338,7 @@ public class ApplicationDao {
 
         ApplicationEntity applicationEntity= validateApplication(id);
         if (Boolean.FALSE.equals(ApplicationStatusTypeEnum.DRAFT.getValue().equals(applicationEntity.getStatus()))) {
+            log.warn("Application with ID: {} is not in DRAFT status, cannot delete. Current status: {}", id, applicationEntity.getStatus());
             throw new CustomValidationException(
                     Status.VALIDATION_ERROR,
                     Translator.toLocale(GepafinConstant.APPLICATION_NOT_IN_DRAFT_STATUS)
@@ -341,6 +349,7 @@ public class ApplicationDao {
         validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
         applicationEntity.setIsDeleted(true);
         applicationEntity = applicationRepository.save(applicationEntity);
+        log.info("Marked application as deleted and saved for ID: {}", id);
 
         /** This code is responsible for adding a version history log for the "Delete application" operation. **/
         loggingUtil.addVersionHistory(
@@ -428,6 +437,7 @@ public class ApplicationDao {
 	}
 
 	private ApplicationResponse getApplicationResponse(ApplicationEntity applicationEntity) {
+        log.info("Generating ApplicationResponse for application ID: {}", applicationEntity.getId());
         ApplicationResponse responseBean = new ApplicationResponse();
         List<FlowEdgesEntity> flowEdgesList = flowEdgesRepository.findByCallId(applicationEntity.getCall().getId());
         Long totalFormSteps = flowFormDao.calculateTotalSteps(flowEdgesList);
@@ -468,9 +478,13 @@ public class ApplicationDao {
     }
 
 	public ApplicationEntity validateApplication(Long id) {
+        log.info("Validating existence of Application with ID: {}", id);
 		ApplicationEntity applicationEntity = applicationRepository.findById(id)
-				.orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
+                .orElseThrow(() -> {
-						Translator.toLocale(GepafinConstant.APPLICATION_NOT_FOUND_MSG)));
+                    log.warn("Application not found for ID: {}", id);
+                    return new ResourceNotFoundException(Status.NOT_FOUND,
+                            Translator.toLocale(GepafinConstant.APPLICATION_NOT_FOUND_MSG));
+                });
 		return applicationEntity;
 	}
 
@@ -494,10 +508,12 @@ public class ApplicationDao {
     }
 
     private ApplicationFormEntity getApplicationFormOrCreate(FormEntity formEntity, ApplicationEntity applicationEntity) {
+        log.info("Fetching ApplicationForm for Application ID: {} and Form ID: {}", applicationEntity.getId(), formEntity.getId());
 
         ApplicationFormEntity applicationFormEntity = applicationFormRepository.findByApplicationIdAndFormId(applicationEntity.getId(), formEntity.getId());
         ApplicationFormEntity oldApplicationFormEntity = Utils.getClonedEntityForData(applicationFormEntity);
         if (applicationFormEntity == null) {
+            log.info("No existing ApplicationForm found. Creating new ApplicationForm for Application ID: {}, Form ID: {}", applicationEntity.getId(), formEntity.getId());
             applicationFormEntity = createApplicationFormEntity(applicationEntity, formEntity);
 
             /** This code is responsible for adding a version history log for the "Create application form" operation. **/
@@ -523,6 +539,8 @@ public class ApplicationDao {
     public ApplicationFormFieldEntity createOrUpdateApplicationFormField(ApplicationFormFieldRequestBean applicationFormFieldRequestBean,
             ApplicationFormEntity applicationFormEntity, List<ApplicationFormFieldEntity> applicationFormFieldEntities, FormEntity formEntity,FieldValidator fieldValidator) {
 
+        log.info("Starting createOrUpdateApplicationFormField for ApplicationForm ID: {}", applicationFormEntity.getId());
+
         ApplicationFormFieldEntity applicationFormFieldEntity = new ApplicationFormFieldEntity();
 
         List<Long> newDocumentIds = validateFileUploadDocuments(applicationFormFieldRequestBean, formEntity);
@@ -542,7 +560,9 @@ public class ApplicationDao {
 	                            try {
 	                                BigDecimal amountRequested = new BigDecimal(fieldValue.toString());
 	                                applicationFormEntity.getApplication().setAmountRequested(amountRequested);
+                                    log.info("Set amountRequested to {} for Application ID: {}", amountRequested, applicationFormEntity.getApplication().getId());
 	                            } catch (NumberFormatException e) {
+                                    log.error("Invalid number format for requested amount: {}", fieldValue, e);
 	                                throw new IllegalArgumentException("Field value is not a valid number: " + fieldValue, e);
 	                            }
 	                    }
@@ -683,6 +703,8 @@ public class ApplicationDao {
         List<Long> documentIds=null;
 //        List<ContentResponseBean> contentResponseBeans=Utils.convertJsonStringToList(formEntity.getContent(),ContentResponseBean.class);
         List<ContentResponseBean> contentResponseBeans=formDao.convertFormEntityToFormResponseBean(formEntity).getContent();
+        log.debug("Validating file upload documents for field ID: {} in form ID: {}", applicationFormFieldRequestBean.getFieldId(), formEntity.getId());
+
         for (ContentResponseBean contentResponseBean:contentResponseBeans){
             if(Boolean.TRUE.equals(contentResponseBean.getName().equals("fileupload")) || Boolean.TRUE.equals(contentResponseBean.getName().equals("fileselect"))) {
                 if (contentResponseBean.getId().equals(applicationFormFieldRequestBean.getFieldId())) {
@@ -692,6 +714,7 @@ public class ApplicationDao {
                         String documentId = (String) fieldValueObject;
                         // Now you can use documentId as needed
                         documentIds = validateDocumentIds(documentId);
+                        log.info("Validated document IDs: {}", documentIds);
                     }
                 }
             }
@@ -701,6 +724,7 @@ public class ApplicationDao {
 
     public List<Long> validateDocumentIds(String documentId) {
         if (documentId != null && !documentId.isEmpty()) {
+            log.info("Validating document IDs: {}", documentId);
             return Arrays.stream(documentId.split(","))
                     .map(Long::parseLong)
                     .peek(docId -> documentService.validateDocument(docId))
@@ -753,6 +777,7 @@ public class ApplicationDao {
     }
 
     public ApplicationGetResponseBean getApplicationByFormId(HttpServletRequest request, Long applicationId, Long formId) {
+        log.info("Received request to get application by formId. ApplicationId: {}, FormId: {}", applicationId, formId);
         List<FormApplicationResponse> formApplicationResponses = new ArrayList<>();
         List<FormEntity> formEntities = new ArrayList<>();
         UserEntity userEntity = validator.validateUser(request);
@@ -903,6 +928,7 @@ public class ApplicationDao {
 
 	public ApplicationResponse createApplicationByCallId(CompanyEntity companyEntity,
 			ApplicationRequest applicationRequest, Long callId, UserEntity userEntity) {
+        log.info("Start creating application for CallId: {}, UserId: {}, CompanyId: {}", callId, userEntity.getId(), companyEntity.getId());
 		CallEntity call = callService.validateCall(callId);
         UserWithCompanyEntity userWithCompanyEntity=companyService.getUserWithCompany(userEntity.getId(),companyEntity.getId());
         checkCallEndDate(call);
@@ -926,11 +952,15 @@ public class ApplicationDao {
 
     public void checkIfApplicationExists(CallEntity call, UserWithCompanyEntity userWithCompanyEntity, UserEntity userEntity){
 
+        log.info("Checking existing applications for UserId: {}, UserWithCompanyId: {}, CallId: {}",
+                userEntity.getId(), userWithCompanyEntity.getId(), call.getId());
         List<ApplicationEntity> applications = applicationRepository.findByUserIdAndUserWithCompany_IdAndCall_IdAndIsDeletedFalseAndStatusNot(
                 userEntity.getId(), userWithCompanyEntity.getId(), call.getId(), ApplicationStatusTypeEnum.REJECTED.name()
         );
 
         if (!applications.isEmpty()) {
+            log.warn("Application already exists for UserId: {}, UserWithCompanyId: {}, CallId: {}. Applications found: {}",
+                    userEntity.getId(), userWithCompanyEntity.getId(), call.getId(), applications.size());
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPLICATION_ALREADY_EXISTS));
         }
     }
@@ -952,10 +982,12 @@ public class ApplicationDao {
         UserEntity userEntity = userService.validateUser(applicationEntity.getUserId());
         validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
         if (ApplicationStatusTypeEnum.SUBMIT.getValue().equals(applicationEntity.getStatus())) {
+            log.warn("Attempt to change status after submission denied | applicationId: {}", applicationId);
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPLICATION_SUBMITTED_CANNOT_CHANGE));
         }
 
         if (Boolean.TRUE.equals(applicationEntity.getStatus().equals(status.getValue()))) {
+            log.warn("Requested status is the same as current status | applicationId: {}, status: {}", applicationId, status);
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPLICATION_ALREADY_IN_PREVIOUS_STATUS));
         }
 
@@ -1095,6 +1127,7 @@ public class ApplicationDao {
     }
 
 	private void sendMailToUserAndCompany(UserEntity userEntity, ApplicationEntity applicationEntity) {
+        log.info("Preparing to send submission email | applicationId: {}, userId: {}", applicationEntity.getId(), userEntity.getId());
 		CallEntity call =applicationEntity.getCall();
         CompanyEntity company=companyService.validateCompany(applicationEntity.getCompanyId());
         UserWithCompanyEntity userWithCompany=companyService.getUserWithCompany(userEntity.getId(),company.getId());
@@ -1185,6 +1218,7 @@ public class ApplicationDao {
     }
 	public ApplicationSignedDocumentResponse uploadSignedDocument(HttpServletRequest request, Long applicationId,
 			MultipartFile file) {
+        log.info("Received request to upload signed document | applicationId: {}, fileName: {}", applicationId, file.getOriginalFilename());
 		ApplicationEntity applicationEntity = validateApplication(applicationId);
         checkCallEndDate(applicationEntity.getCall());
         //cloned entity for old data
@@ -1197,9 +1231,11 @@ public class ApplicationDao {
         ApplicationSignedDocumentEntity oldApplicationSingedDocumentData = Utils.getClonedEntityForData(applicationSignedDocument);
 
         if (applicationSignedDocument != null) {
+            log.info("Existing active signed document found and will be deleted | applicationId: {}, fileName: {}", applicationId, applicationSignedDocument.getFileName());
             deleteSignedDocumentFromS3(applicationSignedDocument);
         }
         UploadFileOnAmazonS3Response uploadFileOnAmazonS3 = uploadFileOnAmazonS3ForUserSignedDocument(file, applicationEntity.getCall().getId(), applicationId);
+        log.info("File uploaded to S3 successfully | applicationId: {}", applicationId);
         applicationSignedDocument = new ApplicationSignedDocumentEntity();
         applicationSignedDocument.setApplication(applicationEntity);
         applicationSignedDocument.setFileName(uploadFileOnAmazonS3.getFileName());
@@ -1213,6 +1249,8 @@ public class ApplicationDao {
 
         applicationEntity.setStatus(ApplicationStatusTypeEnum.READY.getValue());
         applicationEntity = applicationRepository.save(applicationEntity);
+        log.info("Application status updated to READY | applicationId: {}", applicationEntity.getId());
+
 
         /** This code is responsible for adding a version history log for the "Create Call" operation. **/
         loggingUtil.addVersionHistory(
@@ -1221,16 +1259,22 @@ public class ApplicationDao {
         return convertApplicationSignedDocumentToApplicationSignedDocumentResponse(applicationSignedDocument);
     }
     public void deleteSignedDocumentFromS3(ApplicationSignedDocumentEntity applicationSignedDocumentEntity){
+        log.info("Starting soft delete of signed document | applicationSignedDocumentId: {}, fileName: {}",
+                applicationSignedDocumentEntity.getId(), applicationSignedDocumentEntity.getFileName());
         ApplicationSignedDocumentEntity oldApplicationSignedDocument = Utils.getClonedEntityForData(applicationSignedDocumentEntity);
         String oldS3Path = applicationSignedDocumentEntity.getFilePath();
+        log.debug("Old S3 path: {} ", oldS3Path);
         String newS3Path = s3ConfigBean.generateDocumentPathForOther(DocOtherSourceTypeEnum.DELETED_USER_SIGNED_DOCUMENT,applicationSignedDocumentEntity.getApplication().getCall().getId(),applicationSignedDocumentEntity.getApplication().getId(),0L);
+        log.debug("Generated new S3 path for deleted document: {}", newS3Path);
 
         UploadFileOnAmazonS3Response response = amazonS3Service.moveFile(applicationSignedDocumentEntity.getFileName(), oldS3Path, newS3Path);
+        log.info("Moved file in S3 from {} to {} | fileName: {}", oldS3Path, newS3Path, response.getFileName());
         applicationSignedDocumentEntity.setStatus(ApplicationSignedDocumentStatusEnum.INACTIVE.getValue());
         applicationSignedDocumentEntity.setFileName(response.getFileName());
         applicationSignedDocumentEntity.setFilePath(response.getFilePath());
 
         applicationSignedDocumentRepository.save(applicationSignedDocumentEntity);
+        log.info("Updated signed document entity status to INACTIVE and saved | applicationSignedDocumentId: {}", applicationSignedDocumentEntity.getId());
         loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.SOFT_DELETE).oldData(oldApplicationSignedDocument).newData(applicationSignedDocumentEntity).build());
     }
 
@@ -1249,6 +1293,7 @@ public class ApplicationDao {
             log.info("S3 Path {}", s3Path);
             return amazonS3Service.uploadFileOnAmazonS3(s3Path, file);
         } catch (Exception e) {
+            log.error("Failed to upload user signed document | callId: {}, applicationId: {}, error: {}", callId, applicationId, e.getMessage(), e);
             throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.UPLOAD_ERROR_S3));
         }
     }
@@ -1256,6 +1301,7 @@ public class ApplicationDao {
         try {
             return s3ConfigBean.generateDocumentPathForOther(DocOtherSourceTypeEnum.USER_SIGNED_DOCUMENT, callId, applicationId,0L);
         } catch (IllegalArgumentException e) {
+            log.error("Failed to generate S3 path for delegation | callId: {}, applicationId: {}, error: {}", callId, applicationId, e.getMessage(), e);
             throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.S3_PATH_GENERATION_ERROR_MSG));
         }
     }
@@ -1280,13 +1326,14 @@ public class ApplicationDao {
 		}
 		String filename = file.getOriginalFilename();
 		if (filename == null || !filename.endsWith(".p7m")) {
+            log.warn("Invalid file type detected | filename: {}", filename);
 			throw new CustomValidationException(Status.VALIDATION_ERROR,
 					Translator.toLocale(GepafinConstant.VALIDATION_ERROR_FILE_INVALIDTYPE));
 		}
 	}
 
 	public ApplicationSignedDocumentResponse getSignedDocument(HttpServletRequest request, Long applicationId) {
-
+        log.info("Fetching signed document for applicationId: {}", applicationId);
 		ApplicationEntity applicationEntity = validateApplication(applicationId);
 //		validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
 
@@ -1300,6 +1347,7 @@ public class ApplicationDao {
 		ApplicationSignedDocumentEntity applicationSignedDocument = applicationSignedDocumentRepository
 				.findByApplicationIdAndStatus(applicationId, ApplicationSignedDocumentStatusEnum.ACTIVE.getValue());
 		if(applicationSignedDocument == null) {
+            log.warn("No active signed document found for applicationId: {}", applicationId);
 			throw new ResourceNotFoundException(Status.NOT_FOUND,
 					Translator.toLocale(GepafinConstant.APPLICATION_SIGNED_DOCUMENT_NOT_FOUND));
 		}
@@ -1307,6 +1355,7 @@ public class ApplicationDao {
 	}
 
 	public void deleteSignedDocument(HttpServletRequest request, Long applicationId) {
+        log.info("Initiating deletion of signed document for applicationId: {}", applicationId);
 		ApplicationEntity applicationEntity = validateApplication(applicationId);
 		validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
 
@@ -1315,6 +1364,7 @@ public class ApplicationDao {
                 //cloned entity for old data
         ApplicationSignedDocumentEntity oldApplicationSignedDocument = Utils.getClonedEntityForData(applicationSignedDocument);
 		if(applicationSignedDocument == null) {
+            log.warn("No active signed document found to delete for applicationId: {}", applicationId);
 			throw new ResourceNotFoundException(Status.NOT_FOUND,
 					Translator.toLocale(GepafinConstant.APPLICATION_SIGNED_DOCUMENT_NOT_FOUND));
 		}
@@ -1327,7 +1377,7 @@ public class ApplicationDao {
     }
 
     public ApplicationResponse validateApplication(HttpServletRequest request, Long applicationId) {
-
+        log.info("Starting application validation process | applicationId: {}", applicationId);
         ApplicationEntity applicationEntity = validateApplication(applicationId);
         ApplicationEntity oldApplicationEntity = Utils.getClonedEntityForData(applicationEntity);
         checkCallEndDate(applicationEntity.getCall());
@@ -1335,15 +1385,18 @@ public class ApplicationDao {
         UserEntity userEntity = userService.validateUser(applicationEntity.getUserId());
         validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
         if (Boolean.FALSE.equals(ApplicationStatusTypeEnum.DRAFT.getValue().equals(applicationEntity.getStatus()))) {
+            log.warn("Application not in draft status | applicationId: {}, status: {}", applicationId, applicationEntity.getStatus());
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPLICATION_NOT_IN_DRAFT_STATUS));
         }
         if (applicationEntity.getAmountRequested() == null || applicationEntity.getAmountRequested().compareTo(BigDecimal.ZERO) <= 0 ) {
+            log.warn("Invalid amount requested | amount: {}", applicationEntity.getAmountRequested());
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.AMOUNT_REQUEST_SHOULD_GREATED_THEN_ZERO));
         }
         List<FlowEdgesEntity> flowEdgesList = flowEdgesRepository.findByCallId(applicationEntity.getCall().getId());
         Long totalSteps = flowFormDao.calculateTotalSteps(flowEdgesList);
         Integer completedSteps = flowFormDao.getCompletedSteps(applicationEntity, true);
         if (totalSteps.intValue() != completedSteps) {
+            log.warn("Application incomplete | applicationId: {}", applicationId);
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPLICATION_IS_INCOMPLETE_MSG));
         }
 
@@ -1358,7 +1411,7 @@ public class ApplicationDao {
     }
 
     public byte[] downloadApplicationDocumentsAsZip(HttpServletRequest request, Long applicationId) {
-
+        log.info("Starting ZIP download process for applicationId: {}", applicationId);
         ApplicationEntity applicationEntity = validateApplication(applicationId);
         validateAssignedUser(request, applicationId);
         Set<Long> documentIds = extractDocumentIdsFromApplicationForms(applicationId);
@@ -1368,13 +1421,14 @@ public class ApplicationDao {
         List<DocumentEntity> amendmentDocuments = fetchAmendmentDocuments(applicationId);
         List<DocumentEntity> evaluationDocuments = fetchEvaluationDocuments(applicationId);
         if (documents.isEmpty() && signedDocument == null && amendmentDocuments.isEmpty() && evaluationDocuments.isEmpty()) {
+            log.warn("No documents found for applicationId: {}", applicationId);
             throw new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND));
         }
         return createZipWithDocuments(applicationEntity, documents, signedDocument, amendmentDocuments, evaluationDocuments, applicationId);
     }
 
     private void validateAssignedUser(HttpServletRequest request, Long applicationId) {
-
+        log.info("Validating assigned user for applicationId: {}", applicationId);
         AssignedApplicationsEntity assignedApplications = assignedApplicationsRepository.findByApplicationIdAndIsDeletedFalse(applicationId).orElse(null);
         if (assignedApplications != null) {
             validator.validatePreInstructor(request, assignedApplications.getUserId());
@@ -1382,7 +1436,7 @@ public class ApplicationDao {
     }
 
     private Set<Long> extractDocumentIdsFromApplicationForms(Long applicationId) {
-
+        log.info("Extracting document IDs from application forms | applicationId: {}", applicationId);
         Set<Long> documentIds = new HashSet<>();
         List<ApplicationFormEntity> applicationForms = applicationFormRepository.findByApplicationId(applicationId);
         applicationForms.forEach(applicationForm -> {
@@ -1404,16 +1458,17 @@ public class ApplicationDao {
     }
 
     private List<DocumentEntity> fetchAmendmentDocuments(Long applicationId) {
-
+        log.info("Fetching amendment documents for applicationId: {}", applicationId);
         List<ApplicationAmendmentRequestEntity> amendmentRequests = applicationAmendmentRequestRepository.findByApplicationIdAndIsDeletedFalse(applicationId);
         Set<Long> amendmentIds = amendmentRequests.stream().map(ApplicationAmendmentRequestEntity::getId).collect(Collectors.toSet());
         return documentRepository.findBySourceIdInAndSourceAndIsDeletedFalse(amendmentIds, DocumentSourceTypeEnum.AMENDMENT.getValue());
     }
     private List<DocumentEntity> fetchEvaluationDocuments(Long applicationId) {
-
+        log.info("Fetching evaluation documents for applicationId: {}", applicationId);
         Optional<ApplicationEvaluationEntity> evaluationEntity = applicationEvaluationRepository.findByApplicationIdAndIsDeletedFalse(applicationId);
         if (evaluationEntity.isPresent()) {
             Long evaluationId = evaluationEntity.get().getId();
+            log.debug("Found evaluation entity with id: {}", evaluationId);
             return documentRepository.findBySourceIdInAndSourceAndIsDeletedFalse(Collections.singleton(evaluationId), DocumentSourceTypeEnum.EVALUATION.getValue());
         }
         return Collections.emptyList();
@@ -1427,12 +1482,14 @@ public class ApplicationDao {
         return "unknown";
     }
     private void addDocumentToZip(ZipOutputStream zos, String s3Folder, String filePath, String fullPath) {
-
+        log.info("Attempting to add file to ZIP. S3 folder: {}, file path: {}", s3Folder, filePath);
         try (InputStream fileInputStream = amazonS3Service.getFile(s3Folder, filePath)) {
             zos.putNextEntry(new ZipEntry(fullPath));
             IOUtils.copy(fileInputStream, zos);
             zos.closeEntry();
         } catch (IOException e) {
+            log.error("Failed to add file to ZIP. S3 folder: {}, file path: {}, error: {}",
+                    s3Folder, filePath, e.getMessage(), e);
             throw new RuntimeException("Error downloading or adding document to ZIP: " + fullPath, e);
         }
     }

src/main/java/net/gepafin/tendermanagement/dao/ApplicationEvaluationDao.java

@@ -655,6 +655,7 @@ public class ApplicationEvaluationDao {
             ApplicationEvaluationRequest req,
             Long assignedApplicationId) {
 
+        log.info("Start createOrUpdateApplicationEvaluation: assignedApplicationId={}, userId={}", assignedApplicationId, user.getId());
         Optional<ApplicationEvaluationEntity> existingEntityOptional =
                 applicationEvaluationRepository.findByAssignedApplicationsEntity_IdAndIsDeletedFalse(assignedApplicationId);
         ApplicationEvaluationEntity entity = null;
@@ -665,6 +666,7 @@ public class ApplicationEvaluationDao {
         VersionActionTypeEnum actionType = VersionActionTypeEnum.INSERT;
         validateApplicationEvaluationRequest(req, application);
         if (existingEntityOptional.isPresent()) {
+            log.info("Updating existing application evaluation for assignedApplicationId={}", assignedApplicationId);
             entity = existingEntityOptional.get();
             oldApplicationEvaluation = Utils.getClonedEntityForData(entity);
             if(req.getCriteria()!=null) {
@@ -690,6 +692,7 @@ public class ApplicationEvaluationDao {
             entity = applicationEvaluationRepository.save(entity);
             
         } else {
+            log.info("Creating new application evaluation for assignedApplicationId={}", assignedApplicationId);
             AssignedApplicationsEntity assignedApplicationsEntity = assignedApplicationsService.validateAssignedApplication(assignedApplicationId);
             entity = convertToEntity(user, req, assignedApplicationId);
             actionType = VersionActionTypeEnum.INSERT;
@@ -722,12 +725,13 @@ public class ApplicationEvaluationDao {
         List<ApplicationAmendmentRequestEntity> applicationAmendmentRequestEntities =
                 applicationAmendmentRequestRepository.findAllByApplicationEvaluationIdAndIsDeletedFalse(entity.getId());
         if(req.getEvaluationDocument()!=null) {
+            log.info("Updating evaluation document for assignedApplicationId={}", assignedApplicationId);
             updateApplicationEvaluation(assignedApplicationId, req.getEvaluationDocument());
         }
 // Fetch amendment details from the request
         if(req.getAmendmentDetails()!=null) {
+            log.debug("Processing amendment details for evaluationId={}", entity.getId());
 	        List<AmendmentDetailsRequest> amendmentDetailsRequests = req.getAmendmentDetails();
-	
 	        updateAmendmentDocumentsAndFormFields(applicationAmendmentRequestEntities, amendmentDetailsRequests);
         }
 
@@ -740,7 +744,10 @@ public class ApplicationEvaluationDao {
     }
 
     private void validateApplicationEvaluationRequest(ApplicationEvaluationRequest req, ApplicationEntity application) {
+        log.debug("Validating evaluation request for applicationId={}, evaluationVersion={}",
+                application.getId(), application.getEvaluationVersion());
     	if(EvaluationVersionEnum.V2.getValue().equals(application.getEvaluationVersion())) {
+            log.info("Evaluation version is V2 for applicationId={}; setting checklist and criteria to null", application.getId());
     		req.setChecklist(null);
     		req.setCriteria(null);
     	}
@@ -1065,15 +1072,18 @@ public class ApplicationEvaluationDao {
     }
 
     public ApplicationEvaluationEntity validateApplicationEvaluation(Long id) {
-
+        log.debug("Validating existence of ApplicationEvaluationEntity with ID: {}", id);
         Optional<ApplicationEvaluationEntity> entityOptional = applicationEvaluationRepository.findByIdAndIsDeletedFalse(id);
         if (entityOptional.isEmpty()) {
+            log.warn("ApplicationEvaluationEntity not found or marked as deleted for ID: {}", id);
             throw new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.APPLICATION_EVALUATION_NOT_FOUND, id));
         }
+        log.info("Successfully validated ApplicationEvaluationEntity with ID: {}", id);
         return entityOptional.get();
     }
 
     public void validatePreinstructor(HttpServletRequest request,Long applicationId,Long assignedApplicationId){
+        log.debug("Validating preinstructor access: applicationId={}, assignedApplicationId={}", applicationId, assignedApplicationId);
         if (applicationId == null && assignedApplicationId == null) {
             throw new CustomValidationException(
                     Status.BAD_REQUEST,
@@ -1097,12 +1107,14 @@ public class ApplicationEvaluationDao {
         validator.validatePreInstructor(request, assignedApplications.getUserId());
     }
     public ApplicationEvaluationResponse getApplicationEvaluationByApplicationId(HttpServletRequest request, UserEntity user, Long applicationID, Long assignedApplicationID) {
+        log.info("Entering getApplicationEvaluationByApplicationId: applicationID={}, assignedApplicationID={}", applicationID, assignedApplicationID);
         Long applicationId;
         Long assignedApplicationId;
         validatePreinstructor(request, applicationID, assignedApplicationID);
 
         if (applicationID == null && assignedApplicationID != null) {
             assignedApplicationId = assignedApplicationID;
+            log.debug("applicationID is null, fetching from assignedApplicationID={}", assignedApplicationId);
             Optional<AssignedApplicationsEntity> assignedApplicationsOptional =
                     assignedApplicationsRepository.findByIdAndIsDeletedFalse(assignedApplicationId);
 
@@ -1150,6 +1162,7 @@ public class ApplicationEvaluationDao {
 
     public ApplicationEvaluationResponse getEvaluationResponseByApplicationid(UserEntity user, Long applicationId, Long assignedApplicationId) {
 
+        log.debug("Entering getEvaluationResponseByApplicationid with applicationId={}, assignedApplicationId={}, userId={}", applicationId, assignedApplicationId, user.getId());
         ApplicationEvaluationEntity entity = new ApplicationEvaluationEntity();
         ApplicationEvaluationResponse response = new ApplicationEvaluationResponse();
         CallEntity call = null;
@@ -1203,6 +1216,7 @@ public class ApplicationEvaluationDao {
                                       ApplicationEvaluationResponse response,
                                       List<EvaluationCriteriaEntity> evaluationCriterias) {
 
+        log.info("Setting criteria responses for applicationId: {}", applicationId);
         List<CriteriaResponse> criteriaResponses = getInitialCriteriaResponses(entity, applicationId);
 
         criteriaResponses.forEach(criteriaResponse -> {
@@ -1398,6 +1412,7 @@ public class ApplicationEvaluationDao {
     private void setChecklistResponses(ApplicationEvaluationEntity entity, Long applicationId, ApplicationEvaluationResponse response,
                                        List<CallTargetAudienceChecklistEntity> checklistEntities) {
 
+        log.info("Setting checklist responses for applicationId: {}", applicationId);
         List<ChecklistResponse> checklistResponses = entity.getChecklist() != null ? Utils.convertJsonToList(entity.getChecklist(), new TypeReference<List<ChecklistResponse>>() {
         }) : getChecklistResponse(applicationId);
 
@@ -1516,6 +1531,7 @@ public class ApplicationEvaluationDao {
     }
 
     List<CriteriaResponse> getCriteriaResponse(Long applicationId) {
+        log.info("Getting criteria response for applicationId: {}", applicationId);
         CallEntity call = getCallEntityByApplicationId(applicationId);
         List<EvaluationCriteriaEntity> evaluationCriterias = getEvaluationCriterias(call);
 
@@ -1525,10 +1541,12 @@ public class ApplicationEvaluationDao {
     }
 
     private CallEntity getCallEntityByApplicationId(Long applicationId) {
+        log.info("Fetching CallEntity for applicationId: {}", applicationId);
         return callRepository.findCallEntityByApplicationId(applicationId);
     }
 
     private List<EvaluationCriteriaEntity> getEvaluationCriterias(CallEntity call) {
+        log.info("Fetching evaluation criterias for callId: {}", call.getId());
         return  evaluationCriteriaRepository
                 .findByCallIdAndLookupDataTypeAndIsDeletedFalse(call.getId(), LookUpDataEntity.LookUpDataTypeEnum.EVALUATION_CRITERIA.getValue());
     }
@@ -1775,6 +1793,7 @@ public class ApplicationEvaluationDao {
 
     List<ChecklistResponse> getChecklistResponse(Long applicationId) {
 
+        log.info("Fetching checklist responses for applicationId: {}", applicationId);
         CallEntity call = callRepository.findCallEntityByApplicationId(applicationId);
         List<CallTargetAudienceChecklistEntity> checklistEntities =  callTargetAudienceChecklistRepository
                 .findByCallIdAndLookupDataTypeAndIsDeletedFalse(call.getId(), LookUpDataEntity.LookUpDataTypeEnum.CHECKLIST.getValue());
@@ -1860,7 +1879,7 @@ public class ApplicationEvaluationDao {
     }
 
     public void deleteById(Long id) {
-
+        log.info("Starting soft delete for ApplicationEvaluation with id: {}", id);
         ApplicationEvaluationEntity applicationEvaluationEntity = validateApplicationEvaluation(id);
         ApplicationEvaluationEntity oldApplicationEvaluation = Utils.getClonedEntityForData(applicationEvaluationEntity);
         applicationEvaluationEntity.setIsDeleted(true);
@@ -1882,6 +1901,8 @@ public class ApplicationEvaluationDao {
     public ApplicationEvaluationResponse updateApplicationEvaluationStatus(ApplicationEntity application, AssignedApplicationsEntity assignedApplicationsEntity,
                                                                            ApplicationStatusForEvaluation newStatus) {
 
+        log.info("Starting updateApplicationEvaluationStatus for applicationId: {}, assignedApplicationId: {}, newStatus: {}",
+                application.getId(), assignedApplicationsEntity.getId(), newStatus);
         Optional<ApplicationEvaluationEntity> existingEntityOptional = applicationEvaluationRepository.findByAssignedApplicationsEntity_IdAndIsDeletedFalse(
                 assignedApplicationsEntity.getId());
         ApplicationEvaluationEntity entity;
@@ -1907,11 +1928,13 @@ public class ApplicationEvaluationDao {
             }
 
             if(newStatus.equals(ApplicationStatusForEvaluation.TECHNICAL_EVALUATION) && Boolean.TRUE.equals(application.getStatus().equals(ApplicationStatusTypeEnum.ADMISSIBLE.getValue()))){
+                log.info("Processing technical evaluation for applicationId: {}", application.getId());
                 processTechnicalEvaluation(application.getId(), application, newStatus);
             }
 
             if((newStatus.equals(ApplicationStatusForEvaluation.APPROVED) || newStatus.equals(ApplicationStatusForEvaluation.REJECTED)) && application.getStatus().equals(ApplicationStatusTypeEnum.EVALUATION.getValue())) {
                 application.setStatus(newStatus.getValue());
+                log.info("Application status updated to {} for applicationId: {}", newStatus, application.getId());
             }
             application = applicationRepository.save(application);
 
@@ -1923,6 +1946,7 @@ public class ApplicationEvaluationDao {
 
             List<ApplicationAmendmentRequestEntity> amendmentRequest = applicationAmendmentRequestRepository.findAllByApplicationEvaluationIdAndStatusAndIsDeletedFalse(existingEntity.getId(),List.of(ApplicationAmendmentRequestEnum.AWAITING.getValue(),ApplicationAmendmentRequestEnum.RESPONSE_RECEIVED.getValue()));
             if(amendmentRequest !=null && Boolean.FALSE.equals(amendmentRequest.isEmpty())){
+                log.warn("Application cannot be approved or rejected due to pending amendment requests. applicationEvaluationId: {}", existingEntity.getId());
                 throw new CustomValidationException(Status.BAD_REQUEST,Translator.toLocale(GepafinConstant.APPLICATION_CANNOT_APPROVED_OR_REJECTED));
             }
             String statusType = application.getStatus();
@@ -1930,11 +1954,13 @@ public class ApplicationEvaluationDao {
                 existingEntity.setStatus(ApplicationEvaluationStatusTypeEnum.CLOSE.getValue());
                 existingEntity.setClosingDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()));
                 assignedApplicationsEntity.setStatus(AssignedApplicationEnum.CLOSE.getValue());
+                log.info("Closing ApplicationEvaluation and AssignedApplication for applicationId: {}", application.getId());
             }
             if (existingEntity.getStartDate() != null && existingEntity.getClosingDate() != null) {
                 long activeDays = ChronoUnit.DAYS.between(existingEntity.getStartDate(), existingEntity.getClosingDate());
                 activeDays -= existingEntity.getSuspendedDays() != null ? existingEntity.getSuspendedDays() : 0;
                 existingEntity.setActiveDays(activeDays);
+                log.debug("Calculated active days for ApplicationEvaluationEntity id {}: {}", existingEntity.getId(), activeDays);
             }
             entity = applicationEvaluationRepository.save(existingEntity);
             assignedApplicationsRepository.save(assignedApplicationsEntity);
@@ -1993,15 +2019,20 @@ public class ApplicationEvaluationDao {
     }
 
     public ApplicationEvaluationEntity validateApplicationEvaluationByApplicationId(Long applicationId) {
+        log.info("Validating ApplicationEvaluation for applicationId: {}", applicationId);
 		return applicationEvaluationRepository
 				.findByApplicationIdAndIsDeletedFalse(applicationId)
-				.orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
+                .orElseThrow(() -> {
-						Translator.toLocale(GepafinConstant.APPLICATION_EVALUATION_NOT_FOUND)));
+                    log.error("ApplicationEvaluation not found for applicationId: {}", applicationId);
+                    return new ResourceNotFoundException(Status.NOT_FOUND,
+                            Translator.toLocale(GepafinConstant.APPLICATION_EVALUATION_NOT_FOUND));
+                });
 	}
     
     public ApplicationEvaluationResponse updateApplicationEvaluation(
             Long assignedApplicationId,
             List<EvaluationDocumentRequest> docRequest) {
+        log.info("Starting updateApplicationEvaluation for assignedApplicationId: {}", assignedApplicationId);
         Optional<ApplicationEvaluationEntity> entityOptional=applicationEvaluationRepository.findByAssignedApplicationsEntity_IdAndIsDeletedFalse(assignedApplicationId);
         ApplicationEvaluationEntity applicationEvaluationEntity =null;
         ApplicationEvaluationEntity oldApplicationEvaluation = Utils.getClonedEntityForData(entityOptional.get());
@@ -2023,14 +2054,17 @@ public class ApplicationEvaluationDao {
             applicationEvaluationEntity.setEvaluationDocument(updatedEvaluationDocJson);
         }
         ApplicationEvaluationEntity savedEntity = applicationEvaluationRepository.save(applicationEvaluationEntity);
+        log.info("Saved ApplicationEvaluationEntity with id: {}", savedEntity.getId());
 
         /** This code is responsible for adding a version history log for the "Upload Document in Application Evaluation" operation. **/
         loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldApplicationEvaluation).newData(savedEntity).build());
+        log.info("Version history logged for update on ApplicationEvaluationEntity id: {}", savedEntity.getId());
         return convertToResponse(savedEntity);
     }
 
     public ApplicationEvaluationFormResponse createApplicationEvaluation(HttpServletRequest request, ApplicationEvaluationFormRequestBean applicationEvaluationFormRequestBean, Long evaluationFormId, Long assignedApplicationId){
 
+        log.info("Start createApplicationEvaluation - assignedApplicationId: {}, evaluationFormId: {}", assignedApplicationId, evaluationFormId);
         UserEntity user = validator.validateUser(request);
         AssignedApplicationsEntity assignedApplicationsEntity = assignedApplicationsService.validateAssignedApplication(assignedApplicationId);
         ApplicationEntity application = applicationService.validateApplication(assignedApplicationsEntity.getApplication().getId());
@@ -2094,6 +2128,7 @@ public class ApplicationEvaluationDao {
             String fieldId = requestField.getFieldId();
 
             if (!contentMap.containsKey(fieldId)) {
+                log.warn("Field ID not found in evaluation form: {}", fieldId);
                 validator.addError(MessageFormat.format(Translator.toLocale(GepafinConstant.FIELD_ID_NOT_FOUND), fieldId));
             }
 
@@ -2121,6 +2156,7 @@ public class ApplicationEvaluationDao {
                                                                                              ApplicationEvaluationFormEntity applicationEvaluationFormEntity,
                                                                                              List<ApplicationEvaluationFormFieldEntity> applicationEvaluationFormFieldEntities,
                                                                                              EvaluationFormEntity evaluationFormEntity,FieldValidator fieldValidator){
+        log.debug("Starting createOrUpdateApplicationEvaluationFormField for fieldId: {}", applicationFormFieldRequestBean.getFieldId());
         ApplicationEvaluationFormFieldEntity applicationEvaluationFormFieldEntity = new ApplicationEvaluationFormFieldEntity();
         validateFileUploadDocuments(applicationFormFieldRequestBean, evaluationFormEntity);
         VersionActionTypeEnum actionType = VersionActionTypeEnum.INSERT;
@@ -2161,6 +2197,7 @@ public class ApplicationEvaluationDao {
     }
 
     private List<Long> validateFileUploadDocuments(ApplicationFormFieldRequestBean applicationFormFieldRequestBean, EvaluationFormEntity evaluationFormEntity) {
+        log.debug("Validating file upload documents for fieldId: {}", applicationFormFieldRequestBean.getFieldId());
         List<Long> documentIds=null;
 
         List<ContentResponseBean> contentResponseBeans=evaluationFormDao.convertEvaluationFormEntityToEvaluationFormResponseBean(evaluationFormEntity).getContent();
@@ -2185,6 +2222,9 @@ public class ApplicationEvaluationDao {
     private List<ApplicationEvaluationFormFieldReponseBean> createEvaluationFormFieldResponse(
             List<ApplicationEvaluationFormFieldEntity> evaluationFormFieldEntities,
             ApplicationEvaluationFormEntity applicationEvaluationFormEntity){
+        log.info("Starting to create evaluation form field response for EvaluationFormEntity ID: {}",
+                applicationEvaluationFormEntity.getEvaluationForm().getId());
+
         List<ApplicationEvaluationFormFieldReponseBean> evaluationFormFieldResponseBeans =  new ArrayList<>();
         List<ContentResponseBean> contentResponseBeans =evaluationFormDao.convertEvaluationFormEntityToEvaluationFormResponseBean(applicationEvaluationFormEntity.getEvaluationForm()).getContent();
 
@@ -2276,6 +2316,7 @@ public class ApplicationEvaluationDao {
 
     public ApplicationEvaluationFormResponse getApplicationEvaluationForm(HttpServletRequest request, Long applicationId, Long assignedApplicationId ){
 
+        log.debug("Fetching evaluation form. applicationId: {}, assignedApplicationId: {}", applicationId, assignedApplicationId);
         if (applicationId == null && assignedApplicationId == null) {
             throw new CustomValidationException(Status.BAD_REQUEST,Translator.toLocale(GepafinConstant.EITHER_APPLICATION_ID_OR_ASSIGNED_APPLICATION_ID_MUST_BE_PROVIDED));
         }
@@ -2505,6 +2546,7 @@ public class ApplicationEvaluationDao {
         return false;
     }
     private void processTechnicalEvaluation(Long applicationId, ApplicationEntity applicationEntity, ApplicationStatusForEvaluation status){
+        log.info("Starting technical evaluation processing for applicationId: {}", applicationId);
         Optional<ApplicationEvaluationEntity> evaluationEntityOpt = applicationEvaluationRepository.findByApplicationIdAndIsDeletedFalse(applicationId);
         if (evaluationEntityOpt.isPresent()){
             ApplicationEvaluationEntity evaluationEntity = evaluationEntityOpt.get();
@@ -2513,9 +2555,10 @@ public class ApplicationEvaluationDao {
                 BigDecimal totalScore = calculateTotalScore(evaluationEntity.getCriteria());
                 if (totalScore.compareTo(new BigDecimal("40")) > 0) {
                     applicationEntity.setStatus(status.getValue());
-                    log.info("Status updated to TECHNICAL_EVALUATION for applicationId: " + applicationId);
+                    log.info("Status updated to TECHNICAL_EVALUATION for applicationId: {}", applicationId);
                 }
                 else{
+                    log.warn("Insufficient score ({}) for applicationId: {}. Throwing validation exception.", totalScore, applicationId);
                     throw new CustomValidationException(Status.BAD_REQUEST,Translator.toLocale(GepafinConstant.INSUFFICIENT_SCORE_MESSAGE));
                 }
             }
@@ -2537,10 +2580,11 @@ public class ApplicationEvaluationDao {
                     })
                     .reduce(BigDecimal.ZERO, BigDecimal::add);
 
+            log.info("Total score calculated successfully: {}", totalScore);
             return totalScore;
         }
         catch (Exception e) {
-            log.error(" Error parsing criteria JSON: {}", e.getMessage());
+            log.error("Error parsing criteria JSON. Input: {}. Exception: {}", criteriaJson, e.getMessage(), e);
             return BigDecimal.ZERO;
         }
     }

src/main/java/net/gepafin/tendermanagement/dao/AppointmentDao.java

@@ -157,10 +157,11 @@ public class AppointmentDao {
     private static final ThreadLocal<Long> threadLocalHubId = new ThreadLocal<>();
 
     public NdgResponse checkNdgForAppointment(Long applicationId) {
-
+        log.info("Starting NDG check for appointment. applicationId: {}", applicationId);
         ApplicationEntity application = applicationService.validateApplication(applicationId);
         NdgResponse ndgResponse = new NdgResponse();
         if (application.getNdgStatus() != null && application.getNdgStatus().equalsIgnoreCase(GepafinConstant.NDG_IN_PROGRESS)) {
+            log.warn("NDG generation already in progress. applicationId: {}", applicationId);
             throw new CustomValidationException(Status.SUCCESS, Translator.toLocale(GepafinConstant.NDG_GENERATION_IS_IN_PROGRESS));
         }
 
@@ -170,6 +171,7 @@ public class AppointmentDao {
         }
 
         // Update application status
+        log.info("Updating NDG status to IN_PROGRESS. applicationId: {}", applicationId);
         application.setNdgStatus(GepafinConstant.NDG_IN_PROGRESS);
         applicationRepository.save(application);
 
@@ -177,6 +179,7 @@ public class AppointmentDao {
         HubEntity hub = hubRepository.findByHubId(application.getHubId());
         loginToOdessa(hub, application);
         startAsyncNdgProcessing(applicationId);
+        log.info("NDG check initiation completed. applicationId: {}", applicationId);
         return ndgResponse;
     }
 
@@ -340,7 +343,7 @@ public class AppointmentDao {
     //    }
 
     private void loginToOdessa(HubEntity hub, ApplicationEntity application) {
-
+        log.info("Starting login to Odessa. HubId: {}, ApplicationId: {}", hub.getId(), application.getId());
         performOdessaLogin(hub, application);
     }
 
@@ -363,7 +366,7 @@ public class AppointmentDao {
                 Map<String, Object> body = Collections.emptyMap();
                 ResponseEntity<Object> responseLogin = appointmentApiService.loginWithOdessa(authJwtToken, source, context, user, password, body);
                 if (responseLogin.getStatusCode() == HttpStatus.OK) {
-                    log.info("Login successful to odessa. Parsing response.");
+                    log.info("Login to Odessa successful. Parsing response. HubId: {}", hub.getId());
                     String loginResponseJson = Utils.convertObjectToJson(responseLogin.getBody());
                     AppointmentLoginResponse parsedResponse = parseLoginResponse(loginResponseJson);
 
@@ -374,6 +377,7 @@ public class AppointmentDao {
                         log.info("Saved new authToken and areaCode for Hub.");
                         return hub;
                     } else {
+                        log.error("Login response from Odessa missing tokenId. HubId: {}", hub.getId());
                         throw new RuntimeException("Login response is missing a valid tokenId for login to odessa system, please try again.");
                     }
                 }
@@ -424,6 +428,9 @@ public class AppointmentDao {
         } catch (IOException e) {
             log.error("Error parsing JSON response: {}", e.getMessage());
         }
+            catch (Exception e) {
+                throw new RuntimeException("Authentication failed on Odessa. try again", e);
+            }
     }
 
     private void startAsyncNdgProcessing(Long applicationId) {
@@ -460,6 +467,7 @@ public class AppointmentDao {
 
     private void processNdgGeneration(Long applicationId) {
         // Validate application, company, and hub
+        log.info("Starting NDG generation process for applicationId: {}", applicationId);
         ApplicationEntity application = applicationService.validateApplication(applicationId);
         CompanyEntity company = companyService.validateCompany(application.getCompanyId());
         HubEntity hub = hubRepository.findByHubId(application.getHubId());
@@ -487,14 +495,15 @@ public class AppointmentDao {
                 handleNdgPolling(application, company, hub, authorizationToken);
             }
         } catch (Exception e) {
-            log.error("Error during NDG generation for applicationId: {}", applicationId, e);
+            log.error("Exception occurred during NDG generation. ApplicationId: {}, CompanyId: {}, HubId: {}, Error: {}",
+                    applicationId, company.getId(), hub.getId(), e.getMessage(), e);
         }
     }
 
     private void handleNdgPolling(ApplicationEntity application, CompanyEntity company, HubEntity hub, String authorizationToken) {
 
         try {
-            log.info("Starting NDG polling for applicationId: {}", application.getId());
+            log.info("Starting NDG polling for applicationId: {}, CompanyId: {}, HubId: {}", application.getId(),company.getId(), hub.getId());
             long startTime = System.currentTimeMillis();
 
             while (true) {
@@ -506,12 +515,13 @@ public class AppointmentDao {
                 try {
                     // Fetch Visura list and attempt to parse NDG
                     String visuraListJson = getVisuraList(application.getIdVisura(), authorizationToken, application, hub);
+                    log.debug("Parsing NDG from visura list response | ApplicationId: {}", application.getId());
                     String ndg = parseNdgFromVisuraListResponse(visuraListJson);
-
                     if (isNdgValid(ndg)) {
                         //                        CompanyEntity oldCompanyData = Utils.getClonedEntityForData(company);
                         //                        ApplicationEntity oldApplicationData = Utils.getClonedEntityForData(application);
 
+                        log.info("Valid NDG retrieved: {} | ApplicationId: {}", ndg, application.getId());
                         company.setNdg(ndg);
                         application.setNdg(ndg);
                         application.setNdgStatus(GepafinConstant.NDG_GENERATED);
@@ -584,6 +594,7 @@ public class AppointmentDao {
 
     private String getVisuraList(String idVisura, String authorizationToken, ApplicationEntity application, HubEntity hub) {
 
+        log.info("Initiating Visura list retrieval | ApplicationId: {}, HubId: {}, IdVisura: {}", application.getId(), hub.getId(), idVisura);
         AppointmentVisuraListRequest visuraListRequest = new AppointmentVisuraListRequest();
         AppointmentVisuraListRequest.VisuraFilter filter = new AppointmentVisuraListRequest.VisuraFilter();
         filter.setIdVisura(idVisura);
@@ -594,12 +605,12 @@ public class AppointmentDao {
             ResponseEntity<Object> response = appointmentApiService.getVisuraList(requestJson, authorizationToken);
             return Utils.convertObjectToJson(response.getBody());
         } catch (FeignException.Forbidden forbiddenException) {
-            log.error("403 Forbidden received while getting visuraList for Ndg code. Regenerating token...");
+            log.warn("403 Forbidden while fetching Visura list. Attempting token regeneration | ApplicationId: {}, HubId: {}", application.getId(), hub.getId());
             // Regenerate the token and retry
             String newAuthorizationToken = regenerateTokenAndSave(hub, application);
             return getVisuraList(idVisura, newAuthorizationToken, application, hub);
         } catch (Exception e) {
-            log.error("Failed to fetch Ndg code: {}", e.getMessage(), e);
+            log.error("Error while fetching Visura list | ApplicationId: {}, HubId: {}, Error: {}", application.getId(), hub.getId(), e.getMessage(), e);
             throw new RuntimeException("Error fetching Ndg List", e);
         }
     }
@@ -607,6 +618,7 @@ public class AppointmentDao {
     private AppointmentLoginResponse retrieveNdgByVatNumber(String vatNumber, String authorizationToken, HubEntity hub, ApplicationEntity application) {
 
         try {
+            log.info("Initiating NDG retrieval by VAT number | ApplicationId: {}, HubId: {}, VAT: {}", application.getId(), hub.getId(), vatNumber);
             // Prepare the NDG request
             AppointmentNdgRequest ndgRequest = getAppointmentNdgRequest(vatNumber);
             // Call the API to retrieve NDG
@@ -615,12 +627,13 @@ public class AppointmentDao {
             // Parse and return the NDG response
             return parseNdgResponse(responseJson);
         } catch (FeignException.Forbidden forbiddenException) {
+            log.error("403 Forbidden during NDG retrieval | ApplicationId: {}, HubId: {}",  application.getId(), hub.getId());
             logForbiddenError();
             // Regenerate the token and retry
             String newAuthorizationToken = regenerateTokenAndSave(hub, application);
             return retrieveNdgByVatNumber(vatNumber, newAuthorizationToken, hub, application);
         } catch (Exception e) {
-            log.error("Failed to retrieve NDG by VAT number: {}", e.getMessage(), e);
+            log.error("Error during NDG retrieval | ApplicationId: {}, HubId: {}, Message: {}",  application.getId(), hub.getId(), e.getMessage(), e);
             throw new RuntimeException("NDG retrieval failed.", e);
         }
     }
@@ -656,6 +669,7 @@ public class AppointmentDao {
 
     private static AppointmentNdgRequest getAppointmentNdgRequest(String vatNumber) {
 
+        log.info("Creating Appointment NDG Request | VAT Number: {}", vatNumber);
         AppointmentNdgRequest request = new AppointmentNdgRequest();
         AppointmentNdgRequest.Filter filter = new AppointmentNdgRequest.Filter();
         filter.setPartitaIva(vatNumber);
@@ -786,6 +800,7 @@ public class AppointmentDao {
 
     public AppointmentCreationResponse createAppointment(Long applicationId, CreateAppointmentRequest createAppointmentRequest) {
         // Validate the application
+        log.info("Starting appointment creation for applicationId: {}", applicationId);
         ApplicationEntity application = applicationService.validateApplication(applicationId);
 
         AppointmentCreationResponse appointmentCreationResponse = new AppointmentCreationResponse();
@@ -808,6 +823,7 @@ public class AppointmentDao {
             }
 
             if (application.getNdg() == null && Objects.equals(application.getNdgStatus(), GepafinConstant.NDG_IN_PROGRESS)) {
+                log.warn("NDG in progress but not available for applicationId: {}", applicationId);
                 throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.NDG_NOT_FOUND_FOR_APPLICATION));
             }
 
@@ -815,6 +831,7 @@ public class AppointmentDao {
             String authorizationToken = regenerateTokenAndSave(hub, application);
             Long appointmentTemplateId = application.getCall().getAppointmentTemplateId();
             if (appointmentTemplateId == null) {
+                log.error("Missing appointment template ID for applicationId: {}", applicationId);
                 throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPOINTMENT_CANNOT_BE_CREATED));
             }
             ResponseEntity<Object> response = appointmentApiService.getAppointmentTemplateForTemplateCreation(authorizationToken, appointmentTemplateId);
@@ -840,6 +857,7 @@ public class AppointmentDao {
             String appointmentId = extractAppointmentIdFromResponse(appointmentResponse);
 
             if (appointmentId == null) {
+                log.error("Failed to extract appointment ID from response for applicationId: {}", applicationId);
                 throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPOINTMENT_NOT_CREATED));
             }
             // Update application with the appointment ID
@@ -855,7 +873,7 @@ public class AppointmentDao {
             return appointmentCreationResponse;
 
         } catch (FeignException.Forbidden forbiddenException) {
-            log.error("403 Forbidden received while retrieving template. Regenerating token...");
+            log.error("403 Forbidden received while retrieving template. Attempting to regenerate token and retry. Application ID: {}", applicationId);
             regenerateTokenAndSave(hub, application);
             return createAppointment(applicationId, createAppointmentRequest);
         }
@@ -990,6 +1008,7 @@ public class AppointmentDao {
     }
 
     public DocumentUploadResponse uploadDocumentToExternalSystem(Long documentId, UploadDocToExternalSystemRequest docToExternalSystemRequest) {
+        log.info("Initiating upload to external system for documentId: {}", documentId);
         // Check if the document is already being processed
         DocumentEntity systemDoc = documentDao.validateDocument(documentId);
 
@@ -1098,6 +1117,7 @@ public class AppointmentDao {
             DocumentUploadResponse parsedResponse = parseDocumentUploadResponse(responseData);
 
             if (parsedResponse == null) {
+                log.error("Upload failed: parsed response is null for documentId: {}", documentId);
                 throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.ERROR_UPLOADING_DOCUMENT));
             }
 
@@ -1107,7 +1127,7 @@ public class AppointmentDao {
 
             log.info("Document uploaded successfully to external system: {}", parsedResponse);
         } catch (FeignException.Forbidden forbiddenException) {
-            log.error("403 Forbidden received while uploading document. Regenerating token...");
+            log.error("403 Forbidden from external system during upload for documentId: {}. Retrying with new token...", documentId);
             regenerateTokenAndSave(hub, application);
             uploadDocumentToExternalSystemSync(documentId, docToExternalSystemRequest, application);
         } catch (Exception e) {

src/main/java/net/gepafin/tendermanagement/dao/AssignedApplicationsDao.java

@@ -87,8 +87,10 @@ public class AssignedApplicationsDao {
 
         AssignedApplicationsEntity assignedApplications = assignedApplicationsRepository.findByApplicationIdAndIsDeletedFalse(applicationId).orElse(null);
         if (assignedApplications != null && assignedApplications.getUserId().equals(userId)) {
+            log.warn("Application ID={} is already assigned to User ID={}", applicationId, userId);
             throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.APPLICATION_ALREADY_ASSIGNED));
         } else if(assignedApplications != null) {
+            log.info("Reassigning Application ID={} from User ID={} to User ID={}", applicationId, assignedApplications.getUserId(), userId);
         	assignedApplications = reassignApplication(userId, assignedByUser, assignedApplications);
         	AssignedApplicationsResponse assignApplicationToInstructorResponse = convertEntityToResponse(assignedApplications);
             log.info("Application re-assigned succesfully {}", assignApplicationToInstructorResponse);
@@ -98,6 +100,7 @@ public class AssignedApplicationsDao {
 
 
         if (Boolean.FALSE.equals(ApplicationStatusTypeEnum.SUBMIT.getValue().equals(application.getStatus()))) {
+            log.warn("Invalid application status for assignment. Application ID={}, Current Status={}", applicationId, application.getStatus());
             throw new CustomValidationException(
                     Status.BAD_REQUEST,
                     Translator.toLocale(GepafinConstant.INVALID_APPLICATION_STATUS)
@@ -106,6 +109,7 @@ public class AssignedApplicationsDao {
         ApplicationEntity oldApplicationEntity = Utils.getClonedEntityForData(application);
         application.setStatus(ApplicationStatusTypeEnum.EVALUATION.getValue());
         applicationRepository.save(application);
+        log.info("Application status updated to EVALUATION for Application ID={}", applicationId);
 
         /** This code is responsible for adding a version history log for the "Update Application" operation. **/
         loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldApplicationEntity).newData(application).build());
@@ -121,6 +125,9 @@ public class AssignedApplicationsDao {
 	private AssignedApplicationsEntity reassignApplication(Long userId, UserEntity assignedByUser,
 			AssignedApplicationsEntity assignedApplication) {
 
+        log.info("Starting reassignment for AssignedApplication ID={}, from User ID={} to User ID={}, Assigned By User ID={}",
+                assignedApplication.getId(), assignedApplication.getUserId(), userId, assignedByUser.getId());
+
 		AssignedApplicationsEntity oldAssignedApplicationEntity = Utils.getClonedEntityForData(assignedApplication);
 		
 		setIfUpdated(assignedApplication::getAssignedBy, assignedApplication::setAssignedBy, assignedByUser.getId());
@@ -135,11 +142,13 @@ public class AssignedApplicationsDao {
 			/** This code is responsible for adding a version history log for the "Create Application" operation. **/
 	        loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldApplicationEvaluationEntity).newData(entityOptional.get()).build());
 
+            log.info("Updated ApplicationEvaluationEntity for AssignedApplication ID={}", assignedApplication.getId());
 		};
 		assignedApplication = assignedApplicationsRepository.save(assignedApplication);
 		/** This code is responsible for adding a version history log for the "Create Application" operation. **/
         loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldAssignedApplicationEntity).newData(assignedApplication).build());
 
+        log.info("Reassignment completed for AssignedApplication ID={}, new User ID={}", assignedApplication.getId(), userId);
 		return assignedApplication;
 	}
 
@@ -220,8 +229,13 @@ public class AssignedApplicationsDao {
     }
 
     public AssignedApplicationsEntity validateAssignedApplication(Long id) {
-        AssignedApplicationsEntity assignedApplication = assignedApplicationsRepository.findByIdAndIsDeletedFalse(id).orElseThrow(() ->
+        AssignedApplicationsEntity assignedApplication = assignedApplicationsRepository.findByIdAndIsDeletedFalse(id) .orElseThrow(() -> {
-                new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_MSG)));
+            log.warn("AssignedApplication not found or deleted for ID: {}", id);
+            return new ResourceNotFoundException(
+                    Status.NOT_FOUND,
+                    Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_MSG)
+            );
+        });
         return assignedApplication;
     }
 
@@ -232,10 +246,11 @@ public class AssignedApplicationsDao {
         AssignedApplicationsEntity oldAssignedApplicationEntity = Utils.getClonedEntityForData(assignedApplicationsEntity);
         assignedApplicationsEntity.setIsDeleted(true);
         assignedApplicationsEntity = saveAssignedApplication(assignedApplicationsEntity, oldAssignedApplicationEntity, VersionActionTypeEnum.SOFT_DELETE);
-        log.info("Assigned Application deleted with ID: {}", id);
+        log.info("Soft-delete completed for AssignedApplication ID: {} by User ID: {}", id, assignedApplicationsEntity.getUserId());
     }
 
         public List<AssignedApplicationsResponse> getAllAssignedApplications(HttpServletRequest request, Long userId,List<AssignedApplicationEnum> statusList) {
+            log.info("Fetching all assigned applications. Filtered target userId: {}", userId);
             UserEntity user = validator.validateUser(request);
         	if(validator.checkIsPreInstructor() && userId == null) {
         		throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.USER_ID_NOT_NULL_MSG));
@@ -303,6 +318,8 @@ public class AssignedApplicationsDao {
         return response;
     }
     public PageableResponseBean<List<AssignedApplicationViewResponse>> getAllAssignedApplicationsByPagination(UserEntity user, AssignedApplicationPageableRequestBean assignedApplicationPageableRequestBean,Long userId) {
+        log.info("Fetching assigned applications. Requestor: {}, Target User: {}", user.getId(), userId);
+
         Integer pageNo = null;
         Integer pageLimit = null;
         if (assignedApplicationPageableRequestBean.getGlobalFilters() != null) {
@@ -478,13 +495,16 @@ public class AssignedApplicationsDao {
     }
 
     public AssignedApplicationsResponse updateAssignedApplicationStatus(HttpServletRequest request, Long assignedApplicationId, AssignedApplicationEnum status) {
-
+        log.info("Request received to update status of assigned application. AssignedApplicationId: {}, NewStatus: {}", assignedApplicationId, status);
         AssignedApplicationsEntity assignedApplication = validateAssignedApplication(assignedApplicationId);
         validator.validatePreInstructor(request, assignedApplication.getUserId());
 
         AssignedApplicationsEntity oldAssignedApplicationEntity = Utils.getClonedEntityForData(assignedApplication);
         assignedApplication.setStatus(status.getValue());
         AssignedApplicationsEntity updatedAssignment = saveAssignedApplication(assignedApplication, oldAssignedApplicationEntity, VersionActionTypeEnum.UPDATE);
+        log.info("Assigned application status updated successfully. AssignedApplicationId: {}, OldStatus: {}, NewStatus: {}",
+                assignedApplicationId, oldAssignedApplicationEntity.getStatus(), status.getValue());
+
         return convertEntityToResponse(updatedAssignment);
     }
     private void applyFilters(Root<?> root, CriteriaBuilder criteriaBuilder, List<Predicate> predicates, Map<String, FilterCriteria> filters) {

src/main/java/net/gepafin/tendermanagement/dao/CallDao.java

@@ -50,6 +50,7 @@ import net.gepafin.tendermanagement.web.rest.api.errors.ResourceNotFoundExceptio
 import net.gepafin.tendermanagement.web.rest.api.errors.Status;
 
 import static net.gepafin.tendermanagement.enums.RoleStatusEnum.ROLE_SUPER_ADMIN;
+import static net.gepafin.tendermanagement.util.Utils.log;
 import static net.gepafin.tendermanagement.util.Utils.setIfUpdated;
 import static org.apache.commons.lang3.StringUtils.isEmpty;
 import static org.hibernate.internal.util.collections.CollectionHelper.listOf;
@@ -128,6 +129,7 @@ public class CallDao {
 	private ApplicationRepository applicationRepository;
 
 	public CallResponse createCallStep1(CreateCallRequestStep1 createCallRequest, UserEntity userEntity) {
+		log.info("Starting Call creation - Step 1 by userId: {}", userEntity.getId());
 		createCallRequest.setRegionId(userEntity.getRoleEntity().getRegion().getId());
 		CallEntity callEntity = convertToCallEntity(createCallRequest, userEntity);
 
@@ -136,12 +138,15 @@ public class CallDao {
 
 		CallResponse createCallResponseBean = getCallResponseBean(callEntity);
 		createCallResponseBean.setCurrentStep(GepafinConstant.STEP_1);
+		log.info("Call creation - Step 1 completed successfully for callId: {}", callEntity.getId());
 		return createCallResponseBean;
 
 	}
 	public byte[] downloadCallDocumentsAsZip(Long callId) {
+		log.info("Starting download of call documents as ZIP for callId: {}", callId);
 		List<DocumentEntity> documents = documentRepository.findBySourceIdAndSourceAndTypeAndIsDeletedFalse(callId, DocumentSourceTypeEnum.CALL.getValue(),DocumentTypeEnum.DOCUMENT.getValue());
 		if (documents.isEmpty()) {
+			log.warn("No documents found for callId: {}", callId);
 			throw new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND));
 		}
 
@@ -149,6 +154,7 @@ public class CallDao {
 			 ZipOutputStream zos = new ZipOutputStream(zipOutputStream)) {
 
 			for (DocumentEntity document : documents) {
+				log.info("Adding document to ZIP: documentId={}, fileName={}", document.getId(), document.getFileName());
 				String s3Folder = s3PathConfig.generateDocumentPath(DocumentSourceTypeEnum.CALL, callId, 0L,0L);
 				try (InputStream fileInputStream = amazonS3Service.getFile(s3Folder, document.getFilePath())) {
 					String fileName = Utils.extractFileName(document.getFilePath());
@@ -157,14 +163,17 @@ public class CallDao {
 					IOUtils.copy(fileInputStream, zos);
 					zos.closeEntry();
 				} catch (IOException e) {
+					log.error("Error downloading or adding document to ZIP. documentId={}, fileName={}", document.getId(), document.getFileName(), e);
 					throw new RuntimeException("Error downloading or adding document to ZIP: " + document.getFileName(), e);
 				}
 			}
 
 			zos.finish();
+			log.info("Successfully created ZIP file for callId: {}", callId);
 			return zipOutputStream.toByteArray();
 
 		} catch (IOException e) {
+			log.error("Error while creating ZIP file for callId: {}", callId, e);
 			throw new RuntimeException("Error while creating ZIP file", e);
 		}
 	}
@@ -175,8 +184,11 @@ public class CallDao {
 		CallEntity callEntity = new CallEntity();
 		//		validateCallEntity(createCallRequest);
 		RegionEntity region = regionRepository.findById(createCallRequest.getRegionId())
-				.orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
+				.orElseThrow(() -> {
-						Translator.toLocale(GepafinConstant.REGION_NOT_FOUND)));
+					log.error("Region not found for id: {}", createCallRequest.getRegionId());
+					return new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.REGION_NOT_FOUND));
+				});
+
 		callEntity.setRegion(region);
 		callEntity.setName(createCallRequest.getName());
 		callEntity.setDescriptionShort(createCallRequest.getDescriptionShort());
@@ -198,6 +210,7 @@ public class CallDao {
 		}
 		callEntity.setDocumentationRequested(createCallRequest.getDocumentationRequested());
 		if (createCallRequest.getAmountMin() != null && createCallRequest.getAmountMin().compareTo(BigDecimal.ZERO) < 0) {
+			log.error("Invalid minimum amount: {}", createCallRequest.getAmountMin());
 			throw new CustomValidationException(Status.VALIDATION_ERROR,Translator.toLocale(GepafinConstant.AMOUNT_GREATER_THAN_ZERO_MSG));
 		}
 		callEntity.setAmountMin(createCallRequest.getAmountMin());
@@ -212,6 +225,7 @@ public class CallDao {
 		callEntity.setNumberOfCheck(createCallRequest.getNumberOfCheck());
 		callEntity.setAppointmentTemplateId(createCallRequest.getAppointmentTemplateId());
 		callEntity = callRepository.save(callEntity);
+		log.info("CallEntity saved with ID: {} for call name: '{}'", callEntity.getId(), callEntity.getName());
 		
 		/** This code is responsible for adding a version history log for the "Create Call" operation. **/
 		loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.INSERT).oldData(null).newData(callEntity).build());
@@ -237,9 +251,11 @@ public class CallDao {
 	}
 
 	private void softDeleteEvaluationCriteria(EvaluationCriteriaEntity evaluationCriteriaEntity) {
+		log.info("Starting soft delete for EvaluationCriteriaEntity with ID: {}", evaluationCriteriaEntity.getId());
 		EvaluationCriteriaEntity oldEvaluationCriteriaEntity = Utils.getClonedEntityForData(evaluationCriteriaEntity);
 		evaluationCriteriaEntity.setIsDeleted(true);
 		evaluationCriteriaRepository.save(evaluationCriteriaEntity);
+		log.info("Soft deleted EvaluationCriteriaEntity with ID: {}", evaluationCriteriaEntity.getId());
 		
 		/** This code is responsible for adding a version history log for the "soft delete evaluation criteria" operation **/
 		loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.SOFT_DELETE).oldData(oldEvaluationCriteriaEntity).newData(evaluationCriteriaEntity).build());
@@ -257,7 +273,7 @@ public class CallDao {
 				loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.SOFT_DELETE).oldData(oldCriteriaFormFieldEntity).newData(data).build());
 			});
 			criteriaFormFieldRepository.saveAll(list);
-			
+			log.info("Soft deleted all linked CriteriaFormFieldEntity records for EvaluationCriteriaEntity ID: {}", evaluationCriteriaEntity.getId());
 		}
 	}
 
@@ -327,8 +343,11 @@ public class CallDao {
 	private DocumentEntity convertToDocumentEntity(DocumentReq documentReq,Long sourceId) {
 		validateDocumentEntity(documentReq.getId());
 		DocumentEntity documentEntity = documentRepository.findByIdAndSourceIdAndSourceAndIsDeletedFalse(documentReq.getId(),sourceId, DocumentSourceTypeEnum.CALL.getValue())
-				.orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
+				.orElseThrow(() -> {
-						Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND)));
+					log.error("Document not found or already deleted. Document ID: {}, Source ID: {}", documentReq.getId(), sourceId);
+					return new ResourceNotFoundException(Status.NOT_FOUND,
+							Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND));
+				});
 		return documentEntity;
 	}
 
@@ -353,6 +372,7 @@ public class CallDao {
 
 	public void validateDocumentEntity(Long documentId) {
 		if (documentId == null || documentId < 1) {
+			log.warn("Invalid Document ID provided: {}", documentId);
 			throw new CustomValidationException(Status.VALIDATION_ERROR,
 					Translator.toLocale(GepafinConstant.DOCUMENT_ID_NOT_FOUND));
 		}
@@ -491,13 +511,16 @@ public class CallDao {
 	}
 
 	public CallEntity validateCall(Long callId) {
-		return callRepository.findById(callId).orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
+		return callRepository.findById(callId).orElseThrow(() -> { log.error("Call not found for ID: {}", callId);
-				Translator.toLocale(GepafinConstant.CALL_NOT_FOUND)));
+			return new ResourceNotFoundException(Status.NOT_FOUND,
+					Translator.toLocale(GepafinConstant.CALL_NOT_FOUND));
+		});
 	}
 
 	public CallResponse getCallById(HttpServletRequest request,UserEntity user, CallEntity callEntity, Long companyId) {
 		Long userId = user.getId();
 		Long callId = callEntity.getId();
+		log.info("Fetching Call details for Call ID: {}, User ID: {}, Company ID: {}", callId, userId, companyId);
 
 		BeneficiaryPreferredCallEntity preferredCall;
 		if (companyId != null) {
@@ -523,11 +546,14 @@ public class CallDao {
 
 	public CallResponse createCallStep2(CallEntity callEntity, CreateCallRequestStep2 createCallRequest, UserEntity user) {
 //		validateUpdate(callEntity);
+		log.info("Starting Call Step 2 update for Call ID: {}, User ID: {}", callEntity.getId(), user.getId());
 		if(createCallRequest.getThreshold() != null && Boolean.FALSE.equals(createCallRequest.getThreshold().equals(callEntity.getThreshold()))) {
 			CallEntity oldCallEntity =  Utils.getClonedEntityForData(callEntity);
 			setIfUpdated(callEntity::getThreshold, callEntity::setThreshold, createCallRequest.getThreshold());
 			callEntity = callRepository.save(callEntity);
 
+			log.info("Updated threshold for Call ID: {}", callEntity.getId());
+			
 			/** This code is responsible for adding a version history log for the "update call step 2" operation **/
 			loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldCallEntity).newData(callEntity).build());
 		}
@@ -546,6 +572,7 @@ public class CallDao {
 
 	public void validateUpdate(CallEntity callEntity) {
 		if(callEntity.getStatus().equals(CallStatusEnum.PUBLISH.getValue())) {
+			log.warn("Attempted update on published call. Call ID: {}", callEntity.getId());
 			throw new CustomValidationException(Status.VALIDATION_ERROR,
 					Translator.toLocale(GepafinConstant.PUBLISHED_CALL_NOT_UPDATE));
 		}
@@ -574,12 +601,14 @@ public class CallDao {
 		}
 
 		if (Boolean.FALSE.equals(isValid)) {
+			log.error("Invalid date range detected for Call ID: {}", callEntity.getId());
 			throw new CustomValidationException(Status.VALIDATION_ERROR,
 					Translator.toLocale(GepafinConstant.INVALID_DATE_MSG));
 		}
 	}
 
 	public CallResponse updateCallStep1(HttpServletRequest request,CallEntity callEntity, UpdateCallRequestStep1 updateCallRequest, UserEntity userEntity) {
+		log.info("Updating Call ID: {}, by User ID: {}", callEntity.getId(),userEntity.getId() );
 		CallEntity oldCallEntity = Utils.getClonedEntityForData(callEntity);
 		isValidDateRange(updateCallRequest, callEntity);
 		setIfUpdated(callEntity::getName, callEntity::setName, updateCallRequest.getName());
@@ -639,9 +668,11 @@ public class CallDao {
 				updateCallRequest.getDocumentationRequested());
 
 		if (updateCallRequest.getAmountMin() != null && updateCallRequest.getAmountMin().compareTo(BigDecimal.ZERO) < 0) {
+			log.error("Validation failed: Invalid email {} for Call ID: {}", updateCallRequest.getEmail(), callEntity.getId());
 			throw new CustomValidationException(Status.VALIDATION_ERROR,Translator.toLocale(GepafinConstant.AMOUNT_GREATER_THAN_ZERO_MSG));
 		}
 		if(updateCallRequest.getEmail()!=null && Boolean.FALSE.equals(Utils.isValidEmail(updateCallRequest.getEmail()))){
+			log.error("Validation failed: Invalid email {} for Call ID: {}", updateCallRequest.getEmail(), callEntity.getId());
 			throw new CustomValidationException(Status.VALIDATION_ERROR,Translator.toLocale(GepafinConstant.VALIDATION_EMAIL,updateCallRequest.getEmail()));
 		}
 		setIfUpdated(callEntity::getAmountMin, callEntity::setAmountMin, updateCallRequest.getAmountMin());
@@ -661,6 +692,7 @@ public class CallDao {
 		updateFaq(updateCallRequest.getFaq(), callEntity, userEntity, LookUpDataTypeEnum.FAQ);
 		CallResponse createCallResponseBean = getCallResponseBean(callEntity);
 		createCallResponseBean.setCurrentStep(GepafinConstant.STEP_1);
+		log.info("Call Step 1 update completed for Call ID: {}", callEntity.getId());
 		return createCallResponseBean;
 	}
 
@@ -764,6 +796,7 @@ public class CallDao {
 	}
 
 	private CallResponse getCallResponseBean(CallEntity callEntity) {
+		log.info("Building CallResponse for Call ID: {}", callEntity.getId());
 		List<DocumentEntity> documentEntities = documentRepository.findBySourceIdAndSourceAndTypeAndIsDeletedFalse(callEntity.getId(),DocumentSourceTypeEnum.CALL.getValue()
 				, DocumentTypeEnum.DOCUMENT.getValue());
 		List<DocumentEntity> imageEntities = documentRepository.findBySourceIdAndSourceAndTypeAndIsDeletedFalse(callEntity.getId(), DocumentSourceTypeEnum.CALL.getValue()
@@ -790,6 +823,9 @@ public class CallDao {
 
 	public List<CallDetailsResponseBean> getAllCalls(HttpServletRequest request,UserEntity user, Long companyId,Boolean onlyPreferredCall,Boolean onlyConfidiCall) {
 		String type = user.getRoleEntity().getRoleType();
+		log.info("Fetching calls for User ID: {}, Role: {}, Company ID: {}, onlyPreferredCall: {}, onlyConfidiCall: {}",
+				user.getId(), type, companyId, onlyPreferredCall, onlyConfidiCall);
+
 		List<String> callStatusList = CallStatusEnum.getStatusValues();
 		if (Boolean.FALSE.equals(ROLE_SUPER_ADMIN.getValue().equals(type))) {
 			callStatusList = List.of(CallStatusEnum.PUBLISH.getValue());
@@ -811,6 +847,7 @@ public class CallDao {
 					call.getEndDate() != null && call.getEndTime() != null) {
 				LocalDateTime callEndDateTime = LocalDateTime.of(LocalDate.from(call.getEndDate()), call.getEndTime());
 				if (callEndDateTime.isBefore(now)) {
+					log.info("Call ID: {} has expired. Updating status from PUBLISH to EXPIRED.", call.getId());
 					call.setStatus(CallStatusEnum.EXPIRED.getValue());
 					callRepository.save(call);
 				}
@@ -846,14 +883,17 @@ public class CallDao {
 	}
 
 	public Map<String, BeneficiaryPreferredCallEntity> getBeneficiaryPreferredCallsForUser(HttpServletRequest request, UserEntity user, List<Long> callIds, Long companyId) {
+		log.info("Fetching preferred calls for User ID: {}, Company ID: {}, Call IDs: {}", user.getId(), companyId, callIds);
 		List<BeneficiaryPreferredCallEntity> beneficiaryPreferredCalls;
 
 		if (companyId != null && (Boolean.TRUE.equals(validator.checkIsBeneficiary()) || Boolean.TRUE.equals(validator.checkIsConfidi()))) {
+			log.info("Validating user with company for preferred calls: User ID: {}, Company ID: {}", user.getId(), companyId);
 			validator.validateUserWithCompany(request, companyId);
 			UserWithCompanyEntity userWithCompanyEntity=companyService.getUserWithCompany(user.getId(),companyId);
 			beneficiaryPreferredCalls = beneficiaryPreferredCallRepository
 					.findByUserIdAndCallIdInAndUserWithCompanyIdAndIsDeletedFalse(user.getId(), callIds, userWithCompanyEntity.getId());
 		} else {
+			log.info("Fetching preferred calls without company filtering for User ID: {}", user.getId());
 			beneficiaryPreferredCalls = beneficiaryPreferredCallRepository
 					.findByUserIdAndCallIdInAndIsDeletedFalse(user.getId(), callIds);
 			beneficiaryPreferredCalls = beneficiaryPreferredCalls.stream()
@@ -877,6 +917,7 @@ public class CallDao {
 
 
 	public CallResponse validateCallData(CallEntity callEntity) {
+		log.info("Starting call validation for Call ID: {}, Current Status: {}", callEntity.getId(), callEntity.getStatus());
 		CallEntity oldCallEntity = Utils.getClonedEntityForData(callEntity);
 		validateUpdate(callEntity);
 		CallResponse callResponseBean = getCallResponseBean(callEntity);
@@ -886,6 +927,7 @@ public class CallDao {
 		CallValidatorServiceImpl.validateResponse(callResponseBean,flowResponseBean,formResponseBean,evaluationFormResponseBean);
 		callEntity.setStatus(CallStatusEnum.READY_TO_PUBLISH.getValue());
 		callEntity = callRepository.save(callEntity);
+		log.info("Call status updated to READY_TO_PUBLISH for Call ID: {}", callEntity.getId());
 		
 		/** This code is responsible for adding a version history log for the "validate call" operation **/
 		loggingUtil.addVersionHistory(VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldCallEntity).newData(callEntity).build());
@@ -903,11 +945,13 @@ public class CallDao {
 //    }
 
 	public CallResponse updateCallStatus(CallEntity callEntity, CallStatusEnum statusReq) {
+		log.info("Updating call status for Call ID: {} from {} to {}", callEntity.getId(), callEntity.getStatus(), statusReq);
 		CallEntity oldCallEntity = Utils.getClonedEntityForData(callEntity);
 		CallStatusEnum currentStatus = CallStatusEnum.valueOf(callEntity.getStatus());
 		validateStatusChange(currentStatus, statusReq, callEntity.getId());
 		callEntity.setStatus(statusReq.getValue());
 		callEntity = callRepository.save(callEntity);
+		log.info("Call status updated in DB for Call ID: {}. New Status: {}", callEntity.getId(), callEntity.getStatus());
 
 		//Creating notification.
 		List<Long> userIds = beneficiaryRepository.findUserIdsByHubIdAndBeneficiaryId(callEntity.getHub().getId());
@@ -926,27 +970,32 @@ public class CallDao {
 	}
 
 	private void validateStatusChange(CallStatusEnum currentStatus, CallStatusEnum newStatus, Long callId) {
-
+		log.info("Validating status change for Call ID: {} from '{}' to '{}'", callId, currentStatus, newStatus);
 		if (currentStatus == newStatus) {
+			log.warn("Validation failed: current status and new status are the same for Call ID: {}", callId);
 			throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.STATUS_SAME_ERROR));
 		}
 		switch (currentStatus) {
 			case DRAFT:
 				if (newStatus == CallStatusEnum.READY_TO_PUBLISH || newStatus == CallStatusEnum.PUBLISH) {
+					log.warn("Invalid status change attempt from DRAFT to {} for Call ID: {}", newStatus, callId);
 					throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.INVALID_STATUS_CHANGE_FROM_DRAFT));
 				}
 				break;
 
 			case PUBLISH:
 				if (newStatus == CallStatusEnum.READY_TO_PUBLISH) {
+					log.warn("Invalid status change attempt from PUBLISH to READY_TO_PUBLISH for Call ID: {}", callId);
 					throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.INVALID_STATUS_CHANGE_FROM_PUBLISH));
 				}
 				if (newStatus == CallStatusEnum.DRAFT && Boolean.TRUE.equals(applicationRepository.existsByCallId(callId))) {
+					log.warn("Invalid status change attempt from PUBLISH to DRAFT for Call ID: {} due to existing applications", callId);
 					throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.INVALID_STATUS_CHANGE_FROM_PUBLISH_TO_DRAFT));
 				}
 				break;
 
 			case EXPIRED:
+				log.warn("Attempt to change status from EXPIRED for Call ID: {} which is not allowed", callId);
 				throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.STATUS_CANNOT_BE_CHANGED));
 
 			case READY_TO_PUBLISH:
@@ -957,9 +1006,11 @@ public class CallDao {
 	}
 
 	public CallEntity validatePublishedCall(Long callId, Long hubId) {
+		log.info("Validating published call for Call ID: {}, Hub ID: {}", callId, hubId);
 		CallEntity callEntity= callRepository
 				.findByIdAndStatusAndHubId(callId, CallStatusEnum.PUBLISH.getValue(), hubId);
 		if(callEntity==null){
+			log.warn("No published call found with Call ID: {} and Hub ID: {}", callId, hubId);
 			throw new ResourceNotFoundException(
 						Status.NOT_FOUND,
 						Translator.toLocale(GepafinConstant.CALL_NOT_PUBLISHED));
@@ -969,6 +1020,7 @@ public class CallDao {
 
 		if (currentDate.isBefore(callEntity.getStartDate().toLocalDate()) ||
 				(currentDate.isEqual(callEntity.getStartDate().toLocalDate()) && currentTime.isBefore(callEntity.getStartTime()))) {
+			log.warn("Call ID: {} has not started yet. Current time is before start time.", callId);
 			throw new CustomValidationException(
 					Status.BAD_REQUEST,
 					Translator.toLocale(GepafinConstant.CALL_NOT_STARTED_YET)
@@ -977,6 +1029,7 @@ public class CallDao {
 
 		if (currentDate.isAfter(callEntity.getEndDate().toLocalDate()) ||
 				(currentDate.isEqual(callEntity.getEndDate().toLocalDate()) && currentTime.isAfter(callEntity.getEndTime()))) {
+			log.warn("Call ID: {} has already ended. Current time is after end time.", callId);
 			throw new CustomValidationException(
 					Status.BAD_REQUEST,
 					Translator.toLocale(GepafinConstant.CALL_ALREADY_ENDED)
@@ -987,6 +1040,7 @@ public class CallDao {
 	}
 
 	public PageableResponseBean<List<CallDetailsResponseBean>> getAllCallsByPagination(HttpServletRequest request,UserEntity user,Long companyId , Boolean onlyPreferredCall, Boolean onlyConfidiCall, CallPageableRequestBean callPageableRequestBean) {
+			log.info("Fetching paginated calls for userId={}, companyId={}, onlyPreferredCall={}", user.getId(), companyId, onlyPreferredCall);
 		Integer pageNo = null;
 		Integer pageLimit = null;
 		if (callPageableRequestBean.getGlobalFilters() != null) {
@@ -1009,6 +1063,7 @@ public class CallDao {
 		Specification<CallEntity> spec = search(request,user, callPageableRequestBean,onlyConfidiCall);
 		Page<CallEntity> entityPage;
 		if (Boolean.TRUE.equals(onlyPreferredCall)) {
+			log.debug("Filtering calls for preferred by userId={} and companyId={}", user.getId(), companyId);
 			validator.validateUserWithCompany(request, companyId);
 			UserWithCompanyEntity userWithCompanyEntity = companyService.getUserWithCompany(user.getId(), companyId);
 			List<BeneficiaryPreferredCallEntity> preferredCalls = beneficiaryPreferredCallRepository
@@ -1172,6 +1227,8 @@ public class CallDao {
 		LocalDate currentDate = DateTimeUtil.DateServerToUTC(LocalDateTime.now()).toLocalDate();
 		LocalTime currentTime = DateTimeUtil.LocalTimeServerToEurope(LocalTime.now());
 
+		log.info("Checking for expired published calls at date={}, time={}", currentDate, currentTime);
+		
 		List<CallEntity> expirdedCallList = callRepository.findExpiredCallsWhichIsPublished(CallStatusEnum.PUBLISH.getValue(), currentDate, currentTime);
 		
 		if (!expirdedCallList.isEmpty()) {
@@ -1321,7 +1378,7 @@ public class CallDao {
 
 
 	public CallResponse createCallStep2EvaluationV2(CallEntity callEntity, CreateCallRequestStep2EvaluationV2 createCallRequest, UserEntity user) {
-
+		log.info("Starting Step 2 Evaluation (V2) for Call ID={}, User ID={}", callEntity.getId(), user.getId());
 		convertToDocumentEntities(createCallRequest.getDocs(), callEntity.getId(), DocumentTypeEnum.DOCUMENT);
 
 		convertToDocumentEntities(createCallRequest.getImages(), callEntity.getId(), DocumentTypeEnum.IMAGES);

src/main/java/net/gepafin/tendermanagement/dao/CompanyDao.java

@@ -73,6 +73,7 @@ public class CompanyDao {
 
 	public CompanyResponse createCompany(UserEntity userEntity, CompanyRequest companyRequest) {
 
+		log.info("Initiating company creation by userId: {}", userEntity.getId());
 		CompanyEntity existingCompany = companyRepository.findByVatNumberAndHubId(companyRequest.getVatNumber(), userEntity.getHub().getId());
 		UserWithCompanyEntity userWithCompanyEntity = null;
 		if (existingCompany != null) {
@@ -84,6 +85,7 @@ public class CompanyDao {
 				loggingUtil.addVersionHistory(
 						VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.INSERT).oldData(null).newData(userWithCompanyEntity).build());
 			} else {
+				log.warn("User already connected to company. userId: {}, companyId: {}", userEntity.getId(), existingCompany.getId());
 				throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.USER_ALREADY_CONNECTED_TO_COMPANY));
 			}
 			return convertCompanyEntityToCompanyResponse(existingCompany, userWithCompanyEntity);
@@ -121,6 +123,7 @@ public class CompanyDao {
 
 	private UserWithCompanyEntity createUserWithCompanyRelation(UserEntity userEntity, CompanyEntity companyEntity, Boolean isLegalRepresentant,CompanyRequest companyRequest) {
 
+		log.info("Creating user-company relation. userId: {}, companyId: {}, isLegalRep: {}", userEntity.getId(), companyEntity.getId(), isLegalRepresentant);
 		UserWithCompanyEntity userWithCompanyEntity = new UserWithCompanyEntity();
 		if (userEntity.getBeneficiary() != null) {
 			userWithCompanyEntity.setBeneficiaryId(userEntity.getBeneficiary().getId());
@@ -140,6 +143,7 @@ public class CompanyDao {
 			companyEntity.setJson(Utils.convertMapIntoJsonString(companyRequest.getVatCheckResponse()));
 			updateCodiceAtecoFieldWithNewJson(companyEntity);
 			companyEntity = companyRepository.save(companyEntity);
+			log.info("Updated company JSON field and saved. companyId: {}", companyEntity.getId());
 
 			/** This code is responsible for adding a version history log for "updating company json field" operation. **/
 			loggingUtil.addVersionHistory(VersionHistoryRequest.builder()
@@ -202,6 +206,7 @@ public class CompanyDao {
 
 	public CompanyResponse updateCompany(UserEntity userEntity, Long companyId, CompanyRequest companyRequest) {
 
+		log.info("Updating company. companyId: {}, userId: {}", companyId, userEntity.getId());
 		CompanyEntity companyEntity = validateCompany(companyId);
 		//cloned entity for old data
 		CompanyEntity oldCompanyData = Utils.getClonedEntityForData(companyEntity);
@@ -226,11 +231,14 @@ public class CompanyDao {
 //
 //		}
 		companyRepository.save(companyEntity);
+		log.info("Company updated and saved. companyId: {}", companyEntity.getId());
 
 		/** This code is responsible for adding a version history log for the "Update company" operation. **/
 		loggingUtil.addVersionHistory(
 				VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.UPDATE).oldData(oldCompanyData).newData(companyEntity).build());
 
+		log.info("Logged version history for company update. companyId: {}", companyEntity.getId());
+
 		UserWithCompanyEntity userWithCompanyEntity = getUserWithCompany(userEntity.getId(), companyId);
 		//cloned entity for old data
 		UserWithCompanyEntity oldUserWithCompanyData = Utils.getClonedEntityForData(userWithCompanyEntity);
@@ -253,17 +261,19 @@ public class CompanyDao {
 	}
 
 	public CompanyEntity validateCompany(Long companyId) {
+		log.info("Validating company. companyId: {}", companyId);
 		return companyRepository.findById(companyId).orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
 				Translator.toLocale(GepafinConstant.COMPANY_NOT_FOUND_MSG)));
 	}
 
 	public CompanyResponse getCompany(UserEntity userEntity, Long companyId) {
+		log.info("Fetching company details. userId: {}, companyId: {}", userEntity.getId(), companyId);
 		UserWithCompanyEntity userWithCompanyEntity = getUserWithCompany(userEntity.getId(), companyId);
 		return convertCompanyEntityToCompanyResponse(validateCompany(companyId), userWithCompanyEntity);
 	}
 
 	public void deleteCompany(UserEntity userEntity, Long companyId) {
-
+		log.info("Deleting company. userId: {}, companyId: {}", userEntity.getId(), companyId);
 		CompanyEntity companyEntity = validateCompany(companyId);
 
 		/** This code is responsible for adding a version history log for the "delete company" operation. **/
@@ -281,6 +291,7 @@ public class CompanyDao {
 	}
 
 	public List<CompanyResponse> getCompanyByUserId(Long userId) {
+		log.info("Fetching companies by userId: {}", userId);
 		UserEntity userEntity = userService.validateUser(userId);
 		List<Long> activeCompanyIds = userWithCompanyRepository.findActiveCompanyIdsByUserId(userEntity.getId());
 		List<CompanyEntity> companies = companyRepository.findByIdInAndHubId(activeCompanyIds, userEntity.getHub().getId());
@@ -291,15 +302,18 @@ public class CompanyDao {
 	}
 
 	public UserWithCompanyEntity validateUserWithCompny(Long userId, Long companyId) {
+		log.info("Validating user-company access. userId: {}, companyId: {}", userId, companyId);
 		return userWithCompanyRepository.findByUserIdAndCompanyIdAndIsDeletedFalse(userId, companyId).orElseThrow(() -> new ForbiddenAccessException(Status.FORBIDDEN,
 				Translator.toLocale(GepafinConstant.PERMISSION_DENIED)));
 	}
 
 	public UserWithCompanyEntity getUserWithCompany(Long userId, Long compnayId) {
+		log.info("Fetching user-company relation. userId: {}, companyId: {}", userId, compnayId);
 			return userWithCompanyRepository.findByUserIdAndCompanyIdAndIsDeletedFalse(userId, compnayId).orElseThrow(
 					() -> new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.USER_COMPANY_RELATION_NOT_FOUND)));
 		}
 		public void removeCompanyFromList(UserEntity userEntity, Long companyId) {
+			log.info("Initiating removal of company from user list. userId: {}, companyId: {}", userEntity.getId(), companyId);
 			CompanyEntity companyEntity = validateCompany(companyId);
 			UserWithCompanyEntity existingRelation=companyService.getUserWithCompany(userEntity.getId(),companyEntity.getId());
 			List<ApplicationEntity> userApplications = applicationRepository.findByUserWithCompanyIdAndUserIdAndIsDeletedFalse(existingRelation.getId(), userEntity.getId());
@@ -314,6 +328,7 @@ public class CompanyDao {
 			boolean notAllowedStatus = userApplications.stream()
 					.anyMatch(application -> !applicationStatusAllowed.contains(application.getStatus()));
 			if (notAllowedStatus) {
+				log.warn("Cannot remove company. One or more applications in non-removable status. userId: {}, companyId: {}", userEntity.getId(), companyId);
 				throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.CANNOT_DELETE_COMPANY_WITH_APPLICATION_SUBMITT));
 			}
 

src/main/java/net/gepafin/tendermanagement/dao/CompanyDocumentDao.java

@@ -92,16 +92,20 @@ public class CompanyDocumentDao {
     private AmazonS3 amazonS3;
 
     public List<CompanyDocumentResponseBean> uploadFileForCompany(HttpServletRequest request, Long userId, List<MultipartFile> files, Long companyId, Long documentCategoryId, CompanyDocumentTypeEnum companyDocumentSourceTypeEnum, LocalDateTime expirationDate,String name){
+
+        log.info("Uploading files for company. userId={}, companyId={}, documentCategoryId={}", userId, companyId, documentCategoryId);
         DocumentCategoryEntity categoryEntity = categoryDao.validateCategory(documentCategoryId);
         validator.validateUserWithCompany(request,companyId);
         UserWithCompanyEntity userWithCompanyEntity=companyService.getUserWithCompany(userId,companyId);
 
         LocalDateTime currentDate = LocalDateTime.now();
         if (expirationDate.isBefore(currentDate)) {
+            log.warn("Expiration date {} is before current time {}", expirationDate, currentDate);
             throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.INVALID_EXPIRATION_DATE));
         }
         List<CompanyDocumentEntity> companyDocumentEntities = new ArrayList<>();
         for (MultipartFile file : files){
+            log.info("Uploading file '{}' for companyId={}", file.getOriginalFilename(), companyId);
             UploadFileOnAmazonS3Response uploadFileOnAmazonS3Response = uploadFileOnAmazonS3(file, companyDocumentSourceTypeEnum, companyId);
             if (uploadFileOnAmazonS3Response != null) {
                 CompanyDocumentEntity companyDocumentEntity = new CompanyDocumentEntity();
@@ -114,8 +118,10 @@ public class CompanyDocumentDao {
                 companyDocumentEntity.setName(name);
                 if (expirationDate.isBefore(currentDate.plusDays(7))) {
                     companyDocumentEntity.setStatus(CompanyDocumentStatusEnum.DUE.getValue());
+                    log.info("Document '{}' marked as DUE (expires within 7 days).", uploadFileOnAmazonS3Response.getFileName());
                 } else {
                     companyDocumentEntity.setStatus(CompanyDocumentStatusEnum.VALID.getValue());
+                    log.info("Document '{}' marked as VALID.", uploadFileOnAmazonS3Response.getFileName());
                 }
 
                 companyDocumentEntity.setCategoryEntity(categoryEntity);
@@ -125,9 +131,9 @@ public class CompanyDocumentDao {
             }
         }
         companyDocumentRepository.saveAll(companyDocumentEntities);
+        log.info("Saved {} documents for companyId={}", companyDocumentEntities.size(), companyId);
 
         /** This code is responsible for adding a version history log for the "Upload company document" operation. **/
-
         companyDocumentEntities.forEach(entity -> loggingUtil.addVersionHistory(
                 VersionHistoryRequest.builder().request(request).actionType(VersionActionTypeEnum.INSERT).oldData(null).newData(entity).build()));
 
@@ -143,6 +149,7 @@ public class CompanyDocumentDao {
             log.info("Generated S3 path {}", s3Path);
             return amazonS3Service.uploadFileOnAmazonS3(s3Path, file);
         } catch (Exception e) {
+            log.error("Error occurred while uploading file '{}' for Company ID '{}': {}", file.getOriginalFilename(), companyId, e.getMessage());
             throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.UPLOAD_ERROR_S3));
         }
     }
@@ -151,13 +158,17 @@ public class CompanyDocumentDao {
         try {
             return s3ConfigBean.generateCompanyDocumentPath(typeOfDocument, companyId);
         } catch (IllegalArgumentException e) {
+            log.error("Failed to generate S3 path for Company ID '{}' and Document Type '{}': {}", companyId, typeOfDocument, e.getMessage());
             throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.S3_PATH_GENERATION_ERROR_MSG));
         }
     }
 
     public CompanyDocumentEntity validateCompanyDocument(Long id) {
-        return companyDocumentRepository.findByIdAndNotDeleted(id).orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
+        return companyDocumentRepository.findByIdAndNotDeleted(id).orElseThrow(() -> {
-                Translator.toLocale(GepafinConstant.COMPANY_DOCUMENT_NOT_FOUND)));
+                log.warn("Company Document not found with ID '{}'", id);
+                return new ResourceNotFoundException(Status.NOT_FOUND,
+                Translator.toLocale(GepafinConstant.COMPANY_DOCUMENT_NOT_FOUND));
+        });
     }
 
     public CompanyDocumentResponseBean convertToCompanyDocumentResponseBean(CompanyDocumentEntity entity) {
@@ -182,20 +193,23 @@ public class CompanyDocumentDao {
     }
 
     public CompanyDocumentResponseBean updateCompanyDocument(HttpServletRequest request,Long companyDocumentId, CompanyDocumentRequest companyDocumentRequest){
-
+        log.info("Start: Updating company document with ID: {}", companyDocumentId);
         CompanyDocumentEntity companyDocumentEntity = validateCompanyDocument(companyDocumentId);
         validator.validateUserWithCompany(request,companyDocumentEntity.getCompanyId());
         CompanyDocumentEntity oldCompanyDocumentData = Utils.getClonedEntityForData(companyDocumentEntity);
         LocalDateTime currentDate = LocalDateTime.now();
         if (companyDocumentRequest.getExpirationDate() != null) {
             if (companyDocumentRequest.getExpirationDate().isBefore(currentDate)) {
+                log.warn("Invalid expiration date: {}", companyDocumentRequest.getExpirationDate());
                 throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.INVALID_EXPIRATION_DATE));
             }
             companyDocumentEntity.setExpirationDate(companyDocumentRequest.getExpirationDate());
             if (companyDocumentRequest.getExpirationDate().isBefore(currentDate.plusDays(7))) {
                 companyDocumentEntity.setStatus(CompanyDocumentStatusEnum.DUE.getValue());
+                log.info("Document '{}' marked as DUE.", companyDocumentEntity.getName());
             } else {
                 companyDocumentEntity.setStatus(CompanyDocumentStatusEnum.VALID.getValue());
+                log.info("Document '{}' marked as VALID (expiration is beyond 7 days).", companyDocumentEntity.getName());
             }
         }
         if (companyDocumentRequest.getCategoryId() != null && companyDocumentRequest.getCategoryId() >0) {
@@ -204,6 +218,7 @@ public class CompanyDocumentDao {
         }
         setIfUpdated(companyDocumentEntity::getName, companyDocumentEntity::setName, companyDocumentRequest.getName());
         companyDocumentRepository.save(companyDocumentEntity);
+        log.info("Saved updates for Company Document ID '{}'", companyDocumentId);
 
         /** This code is responsible for adding a version history log for the "updating company document" operation. **/
             loggingUtil.addVersionHistory(
@@ -213,12 +228,14 @@ public class CompanyDocumentDao {
     }
 
     public CompanyDocumentResponseBean getCompanyDocument(UserEntity user ,Long companyDocumentId) {
+        log.info("Fetching company document with ID '{}' for user '{}'", companyDocumentId, user.getId());
         CompanyDocumentEntity companyDocumentEntity = validateCompanyDocument(companyDocumentId);
         validator.validateUserWithCompany(request,companyDocumentEntity.getCompanyId());
         return convertToCompanyDocumentResponseBean(companyDocumentEntity);
     }
 
     public void deleteCompanyFile(Long companyDocumentId){
+        log.info("Deleting file for company document ID '{}'", companyDocumentId);
         CompanyDocumentEntity companyDocumentEntity = validateCompanyDocument(companyDocumentId);
         deleteCompanyFileFromS3(companyDocumentEntity);
     }
@@ -259,6 +276,7 @@ public class CompanyDocumentDao {
     }
 
     public DocumentResponseBean createDuplicateCompanyDocument(HttpServletRequest request , Long userId ,Long companyDocumentId , Long applicationId , DocumentTypeEnum documentTypeEnum){
+        log.info("Creating duplicate of company document ID '{}' for application ID '{}'", companyDocumentId, applicationId);
         ApplicationEntity applicationEntity = applicationService.validateApplication(applicationId);
         CompanyDocumentEntity companyDocumentEntity = validateCompanyDocument(companyDocumentId);
         validator.validateUserWithCompany(request,companyDocumentEntity.getCompanyId());
@@ -272,7 +290,7 @@ public class CompanyDocumentDao {
         try {
               response = amazonS3ServiceImpl.copyFile(companyDocumentEntity.getName(), companyDocumentPath, documentPath);
         } catch (Exception e) {
-            log.error("Error occurred while uploading file from Amazon S3: {}", e);
+            log.error("Error occurred while uploading file from Amazon S3: {} for application ID '{}' and company Document ID '{}' ", e,applicationId,companyDocumentId);
             throw new CustomValidationException(Status.VALIDATION_ERROR,
                     Translator.toLocale(GepafinConstant.UPLOAD_ERROR_S3));
         }
@@ -296,12 +314,14 @@ public class CompanyDocumentDao {
     }
 
     public List<CompanyDocumentResponseBean> getAllCompanyDocument(UserEntity user , Long companyId, CompanyDocumentTypeEnum typeEnum){
+        log.info("Fetching all company documents for Company ID '{}', User ID '{}', Type '{}'", companyId, user.getId(), typeEnum);
         validator.validateUserWithCompany(request, companyId);
         companyService.validateCompany(companyId);
 
         Specification<CompanyDocumentEntity> spec = filterCompanyDocuments(companyId, user.getId(), typeEnum);
 
         List<CompanyDocumentEntity> companyDocumentEntities = companyDocumentRepository.findAll(spec);
+        log.info("Retrieved all documents for Company ID '{}'", companyId);
         return companyDocumentEntities.stream()
                 .map(this::convertToCompanyDocumentResponseBean)
                 .collect(Collectors.toList());

src/main/java/net/gepafin/tendermanagement/dao/DocumentDao.java

@@ -82,10 +82,11 @@ public class DocumentDao {
 //    private String s3Folder;
 
 	public List<DocumentResponseBean> uploadFiles(Long userId,List<MultipartFile> files, Long sourceId, DocumentSourceTypeEnum sourceType, DocumentTypeEnum fileType) {
-
+		log.info("Uploading files userId={}, sourceType={}, fileType={}", userId,sourceType,fileType);
 		List<DocumentEntity> documentEntities = new ArrayList<>();
 		Long source = resolveSourceId(sourceId, sourceType);
 		for (MultipartFile file : files) {
+			log.info("Uploading file '{}'", file.getOriginalFilename());
 			UploadFileOnAmazonS3Response uploadFileOnAmazonS3Response = uploadFileOnAmazonS3(file, sourceType, sourceId);
 			if (uploadFileOnAmazonS3Response != null) {
 				DocumentEntity documentEntity = new DocumentEntity();
@@ -148,6 +149,7 @@ public class DocumentDao {
 
 	private UploadFileOnAmazonS3Response uploadFileOnAmazonS3(MultipartFile file, DocumentSourceTypeEnum type, Long sourceId) {
 
+		log.info("Starting S3 upload: fileName={}, documentType={}, sourceId={}", file.getOriginalFilename(), type, sourceId);
 		Long applicationId = 0L;
 		Long amendmentId = 0L;
 		Long evaluationId = 0L;
@@ -155,26 +157,32 @@ public class DocumentDao {
 		if (type == DocumentSourceTypeEnum.APPLICATION) {
 			applicationId = sourceId;
 			callId = applicationRepository.findCallIdById(applicationId);
+			log.info("Processing document of type APPLICATION .Resolved applicationId={}, callId={}", applicationId, callId);
 		} else if (type == DocumentSourceTypeEnum.AMENDMENT) {
 			amendmentId = sourceId;
 			ApplicationEntity applicationEntity = applicationAmendmentRequestRepository.findApplicationByAmendmentId(amendmentId);
 			applicationId = applicationEntity.getId();
 			callId = applicationEntity.getCall().getId();
+			log.info("Processing document of type AMENDMENT .Resolved amendmentId={}, applicationId={}, callId={}", amendmentId, applicationId, callId);
 		}else if (type == DocumentSourceTypeEnum.EVALUATION) {
 			evaluationId = sourceId;
 			ApplicationEntity applicationEntity = applicationEvaluationRepository.findApplicationByEvaluationId(evaluationId);
 			applicationId = applicationEntity.getId();
 			callId = applicationEntity.getCall().getId();
+			log.info("Processing document of type EVALUATION .Resolved evaluationId={}, applicationId={}, callId={}", evaluationId, applicationId, callId);
 		}
 		try {
 			String s3Path = generateS3Path(type, callId, applicationId, amendmentId);
 			log.info("Generated S3 path {}", s3Path);
 			return amazonS3Service.uploadFileOnAmazonS3(s3Path, file);
 		} catch (Exception e) {
+			log.error("Error uploading file to S3: fileName={}, documentType={}, sourceId={}, error={}",
+					file.getOriginalFilename(), type, sourceId, e.getMessage(), e);
 			throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.UPLOAD_ERROR_S3));
 		}
 	}
 
+
 	public String generateS3Path(DocumentSourceTypeEnum typeOfDocument, Long callId, Long applicationId, Long amendmentId) {
 		try {
 			return s3ConfigBean.generateDocumentPath(typeOfDocument, callId, applicationId, amendmentId);
@@ -202,6 +210,7 @@ public class DocumentDao {
 		DocumentEntity documentEntity =  documentRepository.findById(documentId).orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
 		Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND)));
 		if(Boolean.TRUE.equals(documentEntity.getIsDeleted())){
+			log.info("Document with id={} is already marked as deleted. Skipping deletion.", documentId);
 			return;
 		}
 		Long callId = null;
@@ -211,24 +220,28 @@ public class DocumentDao {
 
 		if (DocumentSourceTypeEnum.CALL.getValue().equalsIgnoreCase(documentEntity.getSource())) {
 			callId = documentEntity.getSourceId();
+			log.info("Processing document of type CALL. Resolved callId={}", callId);
 		} else if (DocumentSourceTypeEnum.APPLICATION.getValue().equalsIgnoreCase(documentEntity.getSource())) {
 			applicationId = documentEntity.getSourceId();
 			ApplicationEntity applicationEntity = applicationService.validateApplication(applicationId);
 			callId = applicationEntity.getCall().getId();
+			log.info("Processing document of type APPLICATION. Resolved applicationId={}, callId={}", applicationId, callId);
 		}
 		else if(DocumentSourceTypeEnum.AMENDMENT.getValue().equalsIgnoreCase(documentEntity.getSource())){
 			amendmentId = documentEntity.getSourceId();
 			ApplicationEntity applicationEntity = applicationAmendmentRequestRepository.findApplicationByAmendmentId(amendmentId);
 			applicationId = applicationEntity.getId();
 			callId = applicationEntity.getCall().getId();
+			log.info("Processing document of type AMENDMENT. Resolved amendmentId={}, applicationId={}, callId={}", amendmentId, applicationId, callId);
 		} else if(DocumentSourceTypeEnum.EVALUATION.getValue().equalsIgnoreCase(documentEntity.getSource())){
 			evaluationId = documentEntity.getSourceId();
 			ApplicationEntity applicationEntity = applicationEvaluationRepository.findApplicationByEvaluationId(evaluationId);
 			applicationId = applicationEntity.getId();
 			callId = applicationEntity.getCall().getId();
+			log.info("Processing document of type EVALUATION. Resolved evaluationId={}, applicationId={}, callId={}", evaluationId, applicationId, callId);
 		}
 		deleteFileFromS3(documentEntity, callId, applicationId,amendmentId);
-
+		log.info("Successfully deleted file from S3 for documentId={}", documentId);
 	}
 
 	public DocumentEntity validateDocument(Long id) {
@@ -238,6 +251,9 @@ public class DocumentDao {
 
 	public DocumentResponseBean updateDocument(Long documentId, MultipartFile file, DocumentTypeEnum documentTypeEnum) {
 
+		log.info("Starting document update: documentId={} , newDocumentType={}",
+				documentId , documentTypeEnum);
+
 		DocumentEntity documentEntity = validateDocument(documentId);
 		//cloned entity for old data
 		DocumentEntity oldDocumentData = Utils.getClonedEntityForData(documentEntity);
@@ -245,12 +261,15 @@ public class DocumentDao {
 		String type = documentEntity.getSource();
 		UploadFileOnAmazonS3Response uploadFileOnAmazonS3Response = updateFileOnAmazonS3(file, DocumentSourceTypeEnum.valueOf(type), documentEntity.getSourceId());
 		if (uploadFileOnAmazonS3Response != null) {
+			log.info("Successfully uploaded new file to S3: fileName={}",
+					uploadFileOnAmazonS3Response.getFileName());
 			documentEntity.setFileName(uploadFileOnAmazonS3Response.getFileName());
 			documentEntity.setFilePath(uploadFileOnAmazonS3Response.getFilePath());
 			documentEntity.setType(documentTypeEnum.getValue());
 			documentEntity.setSource(documentEntity.getSource());
 			documentEntity.setSourceId(documentEntity.getSourceId());
 			documentRepository.save(documentEntity);
+			log.info("Document updated in database for documentId={}", documentId);
 
 			/** This code is responsible for adding a version history log for the "updating doc or image" operation. **/
 			loggingUtil.addVersionHistory(
@@ -260,7 +279,6 @@ public class DocumentDao {
 	}
 
 	private UploadFileOnAmazonS3Response updateFileOnAmazonS3(MultipartFile file, DocumentSourceTypeEnum type, Long id) {
-
 		try {
 			Long callId=null;
 			Long applicationId=null;
@@ -269,27 +287,32 @@ public class DocumentDao {
 			if (type.equals(DocumentSourceTypeEnum.APPLICATION)) {
 				callId = applicationRepository.findCallIdById(id);
 				applicationId = id;
+				log.info("Processing document of type APPLICATION . Resolved applicationId={}, callId={}", applicationId, callId);
 			}
 			else if(type.equals(DocumentSourceTypeEnum.AMENDMENT)){
 				amendmentId = id;
 				ApplicationEntity applicationEntity = applicationAmendmentRequestRepository.findApplicationByAmendmentId(amendmentId);
 				applicationId = applicationEntity.getId();
 				callId = applicationEntity.getCall().getId();
+				log.info("Processing document of type AMENDMENT . Resolved amendmentId={}, applicationId={}, callId={}", amendmentId, applicationId, callId);
 			}else if(type.equals(DocumentSourceTypeEnum.EVALUATION)){
 				evaluationId = id;
 				ApplicationEntity applicationEntity = applicationEvaluationRepository.findApplicationByEvaluationId(evaluationId);
 				applicationId = applicationEntity.getId();
 				callId = applicationEntity.getCall().getId();
+				log.info("Processing document of type EVALUATION . Resolved evaluationId={}, applicationId={}, callId={}", evaluationId, applicationId, callId);
 			}
 
 			else {
 				callId = id;
 				applicationId = 0L;
+				log.info("Processing document of type CALL . Resolved callId={}", callId);
 			}
 			String s3Path = generateS3Path(type, callId, applicationId,amendmentId);
 			log.info("Generated S3 path {}", s3Path);
 			return amazonS3Service.uploadFileOnAmazonS3(s3Path, file);
 		} catch (Exception e) {
+			log.error("Error during file update to S3: documentType={}, sourceId={}, error={}",type, id, e.getMessage(), e);
 			throw new CustomValidationException(Status.VALIDATION_ERROR, Translator.toLocale(GepafinConstant.UPLOAD_ERROR_S3));
 		}
 	}
@@ -304,6 +327,7 @@ public class DocumentDao {
 			DocumentEntity oldDocumentEntity = Utils.getClonedEntityForData(documentEntity);
 			String oldS3Path = documentEntity.getFilePath();
 			String newS3Path = s3ConfigBean.generateDocumentPathForOther(DocOtherSourceTypeEnum.valueOf("DELETED_" + documentEntity.getSource().toUpperCase()), callId, applicationId,amendmentId);
+			log.info("Moving file to deleted path: oldS3Path={}, newS3Path={}", oldS3Path, newS3Path);
 			UploadFileOnAmazonS3Response response = amazonS3Service.moveFile(documentEntity.getFileName(), oldS3Path, newS3Path);
 			documentEntity.setFileName(response.getFileName());
 			documentEntity.setFilePath(response.getFilePath());

src/main/java/net/gepafin/tendermanagement/dao/PdfDao.java

@@ -62,6 +62,7 @@ public class PdfDao {
 
     public byte[] generatePdf(HttpServletRequest request,Long applicationId) {
         try {
+            log.info("Start generating PDF for applicationId: {}", applicationId);
         	UserEntity userEntity = validator.validateUser(request);
             ApplicationEntity applicationEntity = applicationDao.validateApplication(applicationId);
             validator.validateUserWithCompany(request, applicationEntity.getCompanyId());
@@ -125,6 +126,7 @@ public class PdfDao {
 
             return pdfBytes;
         } catch (Exception e) {
+            log.error("Error generating PDF for applicationId: {}", applicationId, e);
             e.printStackTrace();
         }
         return null;