diff --git a/apps/promotions/admin.py b/apps/promotions/admin.py
index 7677367..2233e09 100644
--- a/apps/promotions/admin.py
+++ b/apps/promotions/admin.py
@@ -4,8 +4,11 @@ from django.contrib import admin
 
 from .models import Promotion, Plan, Event, Recipient, EventSaver
 
+class PromotionAdmin(admin.ModelAdmin):
+    list_display = ['user_uuid', 'plan', 'promotion_amount', 'recipient', 'event', 'created_at']
+
 admin.site.register(Plan)
-admin.site.register(Promotion)
+admin.site.register(Promotion, PromotionAdmin)
 admin.site.register(Event)
 admin.site.register(EventSaver)
 admin.site.register(Recipient)
diff --git a/apps/promotions/urls.py b/apps/promotions/urls.py
index 51be05f..d64de68 100644
--- a/apps/promotions/urls.py
+++ b/apps/promotions/urls.py
@@ -10,9 +10,9 @@ from .views import ApplicationPromoteUserApiView, ApplicationEventSubmitAPIView,
 app_name = 'promotions'
 
 router = DefaultRouter()
-router.register(r'application', views.ApplicationPromotionViewSet, basename='application_promotions')
-router.register(r'events', views.ApplicationViewSet, basename='application-events')
-router.register(r'plans', views.UserViewSet, basename='user')
+# router.register(r'application', views.ApplicationPromotionViewSet, basename='application_promotions')
+# router.register(r'events', views.ApplicationViewSet, basename='application-events')
+# router.register(r'plans', views.UserViewSet, basename='user')
 
 # urlpatterns =
 
diff --git a/apps/promotions/views.py b/apps/promotions/views.py
index 2140cfe..8775077 100644
--- a/apps/promotions/views.py
+++ b/apps/promotions/views.py
@@ -8,6 +8,7 @@ from rest_framework.viewsets import GenericViewSet
 
 from apps.gooyal_oauth2.rest_framework import IsAuthenticatedOrTokenMatchesOASRequirements
 from apps.gooyal_oauth2.utils import get_application
+from utils.exceptions import UnprocessableEntity
 from .models import Plan, Promotion, EventSaver
 from .serializers import PlanSerializer, PromotionSerializer, EventSerializer, PromoteSerializer
 from .tasks import analyze_event_task
@@ -225,7 +226,10 @@ class ApplicationEventSubmitAPIView(CreateAPIView):
         data = serializer.validated_data
         application = get_application(self.request)
         event_saver: EventSaver = EventSaver.objects.filter(event_label=serializer.validated_data['label']).first()
-        event = event_saver.save_event(user=None, application=application, **serializer.validated_data)
+        try:
+            event = event_saver.save_event(user=None, application=application, **serializer.validated_data)
+        except Exception as e:
+            raise UnprocessableEntity(str(e))
 
         analyze_event_task.delay(event.uuid)
 
diff --git a/utils/exceptions.py b/utils/exceptions.py
index f0b7e9c..807f9b5 100644
--- a/utils/exceptions.py
+++ b/utils/exceptions.py
@@ -52,3 +52,11 @@ class ErrorMiddleware:
             },
             status=500
         )
+
+
+from rest_framework.exceptions import APIException
+
+class UnprocessableEntity(APIException):
+    status_code = 422
+    default_detail = 'The request was well-formed but cannot be processed due to semantic errors.'
+    default_code = 'unprocessable_entity'