Changes for assign alternative examCenter

src/main/java/com/tarento/upsmf/examsAndAdmissions/model/ExamCenter.java

 package com.tarento.upsmf.examsAndAdmissions.model;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.tarento.upsmf.examsAndAdmissions.enums.ApprovalStatus;
 import lombok.*;
 
@@ -43,6 +44,16 @@ public class ExamCenter {
     private Boolean alternateExamCenterAssigned = false;
     @OneToOne
     @JoinColumn(name = "alternate_exam_center_id")
+//    @JsonIgnore // Ignore this field during JSON serialization
     private ExamCenter alternateExamCenter;
 
+    @Override
+    public String toString() {
+        return "ExamCenter{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                // ... (other fields)
+                ", alternateExamCenter=" + (alternateExamCenter != null ? alternateExamCenter.getId() : null) + // Handle alternateExamCenter to break the cyclic reference
+                '}';
+    }
 }

src/main/java/com/tarento/upsmf/examsAndAdmissions/service/ExamCenterService.java

@@ -78,13 +78,13 @@ public class ExamCenterService {
                 // Set the alternate exam center for the unverified exam center
                 unverifiedExamCenter.setAlternateExamCenter(alternateExamCenter);
                 unverifiedExamCenter.setAlternateExamCenterAssigned(true);
-                examCenterRepository.save(unverifiedExamCenter);
+                unverifiedExamCenter = examCenterRepository.save(unverifiedExamCenter);
 
                 // Save the updated registrations
                 List<StudentExamRegistration> updatedRegistrations = studentExamRegistrationRepository.saveAll(affectedRegistrations);
 
                 response.put("message", "Alternate Exam Center assigned successfully.");
-                response.put(Constants.RESPONSE, updatedRegistrations);
+                response.put(Constants.RESPONSE, unverifiedExamCenter);
                 response.setResponseCode(HttpStatus.OK);
             }
         } catch (EntityNotFoundException e) {