fix sync post service returns

sync/views.py

@@ -1,4 +1,6 @@
 # from django.shortcuts import render
+import re
+import json
 from .serializers import DataAccessSerializer
 from django.db.models import Q
 
@@ -95,6 +97,8 @@ class SynchronizationApi(HierarchyApiView):
         results = []
 
         for op in operations:
+            result = None
+            message = None
             try:
                 model_operation = op.get('operation')
                 model_name = op.get('model_name')
@@ -115,7 +119,7 @@ class SynchronizationApi(HierarchyApiView):
                         response_status = status.HTTP_201_CREATED
                     else:
                         print(f'Data invalid ! {serializer.errors}')
-                        result = serializer.errors
+                        message = json.dumps(serializer.errors)
                         response_status = status.HTTP_400_BAD_REQUEST
                 elif model_operation == 'PUT':
                     data_id = data.get('id')
@@ -148,13 +152,14 @@ class SynchronizationApi(HierarchyApiView):
                             response_status = status.HTTP_404_NOT_FOUND
 
             except Exception as e:
-                response_status = 'error'
-                result = str(e)
+                response_status = status.HTTP_400_BAD_REQUEST
+                message = str(e)
 
             results.append({
                 'api_call_id': op.get('api_call_id'),
                 'status': response_status,
-                'data': result
+                'data': result,
+                'message': message
             })
 
         return Response({