edit assignment

apps/pos_device/web/api/v1/serilaizers/client.py

@@ -13,7 +13,7 @@ class POSClientSerializer(ModelSerializer):
         org = attrs['organization']
 
         # check for duplicate organization client
-        if org:
+        if not self.instance and org:
             if self.Meta.model.objects.filter(organization=org).exists():
                 raise APIException("قبلا کلاینت با این سازمان ثبت شده است", code=status.HTTP_403_FORBIDDEN)  # noqa