+ mock_requests.return_value.status_code = 204
+ mock_requests.get.return_value.status_code = 204
+ mock_uuid4.return_value = temp_uuid
+ response = self.client.post("/api/vnflcm/v1/subscriptions", data=miss_callbackUri_subscription, format='json')
+ self.assertEqual(400, response.status_code)
+ self.assertEqual({'callbackUri': ['This field is required.']}, response.data['detail'])