Updated code

src/main/java/net/gepafin/tendermanagement/model/request/AmendmentFieldRequest.java

@@ -8,6 +8,6 @@ public class AmendmentFieldRequest {
     private String fieldId;
     private String nameValue;
     private String fileValue;
-    private Boolean isValid = false;
+    private Boolean valid = false;
 
 }

src/main/java/net/gepafin/tendermanagement/model/request/AmendmentFormField.java

@@ -13,7 +13,7 @@ public class AmendmentFormField {
 
     private String fieldValue;
     
-    private Boolean isValid;
+    private Boolean valid;
 
 
     

src/main/java/net/gepafin/tendermanagement/model/request/AmendmentFormFieldRequest.java

@@ -9,5 +9,5 @@ public class AmendmentFormFieldRequest {
 
     private Object fieldValue;
 
-    private Boolean isValid;
+    private Boolean valid;
 }

src/main/java/net/gepafin/tendermanagement/model/response/AmendmentDocumentResponse.java

@@ -8,5 +8,5 @@ public class AmendmentDocumentResponse {
     private String fieldId;
     private String nameValue;
     private DocumentResponseBean fileValue;
-    private Boolean isValid = false;
+    private Boolean valid = false;
 }