control one permission with same name for each page

apps/core/exceptions.py

@@ -4,3 +4,12 @@
     you can check out the Django Rest Framework documentation at:
     https://www.django-rest-framework.org/api-guide/exceptions/#custom-exception-handling
 """
+
+from rest_framework.exceptions import APIException
+from rest_framework import status
+
+
+class ConflictException(APIException):
+    status_code = status.HTTP_409_CONFLICT
+    default_detail = "Object already exists."
+    default_code = "conflict"