diff --git a/apps/promotions/tests.py b/apps/promotions/tests.py
index 8f0305f..2b37159 100644
--- a/apps/promotions/tests.py
+++ b/apps/promotions/tests.py
@@ -720,6 +720,46 @@ class ApplicationApiFlowsTests(APITestCase):
         print(response.json())
         self.assertEqual(response.status_code, 404)
 
+    def test_application_event_viewset_create_success(self):
+        EventSaver.objects.get_or_create(
+            title=self.first_ad_view_reward_label,
+            event_label=self.first_ad_view_reward_label,
+            save_once=False,
+        )
+
+        auth = self._create_authorization_header(self.application_access_token.token)
+        event_create_data = {
+            'label': self.first_ad_view_reward_label,
+            'data': {'foo': 'bar'},
+        }
+
+        url = reverse('promotions-application:event-list', kwargs={'user_uuid': str(self.user_1_uuid)})
+        response = self.client.post(url, event_create_data, HTTP_AUTHORIZATION=auth, format='json')
+
+        self.assertEqual(response.status_code, 201)
+        event = Event.objects.get(label=self.first_ad_view_reward_label)
+        self.assertEqual(event.user, self.user_1_uuid)
+
+    def test_application_event_viewset_create_duplicate_returns_unprocessable_entity(self):
+        EventSaver.objects.get_or_create(
+            title=self.first_ad_view_reward_label,
+            event_label=self.first_ad_view_reward_label,
+            save_once=True,
+        )
+
+        auth = self._create_authorization_header(self.application_access_token.token)
+        event_create_data = {
+            'label': self.first_ad_view_reward_label,
+            'data': {'foo': 'bar'},
+        }
+
+        url = reverse('promotions-application:event-list', kwargs={'user_uuid': str(self.user_1_uuid)})
+        first_response = self.client.post(url, event_create_data, HTTP_AUTHORIZATION=auth, format='json')
+        self.assertEqual(first_response.status_code, 201)
+
+        second_response = self.client.post(url, event_create_data, HTTP_AUTHORIZATION=auth, format='json')
+        self.assertEqual(second_response.status_code, 422)
+
     def _create_first_ad_create_plan(self):
         event_label = 'ads::first-ad-create'
         plan_title = 'first-ad-create'
diff --git a/apps/promotions/views_application.py b/apps/promotions/views_application.py
index 9664c7e..2870634 100644
--- a/apps/promotions/views_application.py
+++ b/apps/promotions/views_application.py
@@ -145,18 +145,15 @@ class ApplicationEventViewSet(
         return Response(serializer.data)
 
     def perform_create(self, serializer: EventSerializer):
-        if hasattr(self.request, 'user'):
-            user = self.request.user
-        else:
-            user = None
+        user = self._resolve_user()
 
         application = get_application(self.request)
         # EventSaver.objects.first(event_label=serializer.validated_data['event_label'], valid_application__contains=application.uuid)
         event_saver: EventSaver = EventSaver.objects.filter(event_label=serializer.validated_data['label']).first()
         try:
-            event = event_saver.save_event(user=user, application=application, **serializer.validated_data)
+            event = event_saver.save_event(user=user.uuid, application=application, **serializer.validated_data)
         except Exception as e:
-            raise exceptions.ValidationError(str(e))
+            raise UnprocessableEntity(str(e))
 
         analyze_event_task.delay(event.uuid)
         serializer.instance = event