server/AyaNova/biz/NotifySubscriptionBiz.cs

@@ -101,6 +101,11 @@ namespace AyaNova.Biz
                 AddError(ApiErrorCode.NOT_FOUND, "id");
                 return null;
             }
+            if (dbObject.Concurrency != putObject.Concurrency)
+            {
+                AddError(ApiErrorCode.CONCURRENCY_CONFLICT);
+                return null;
+            }
             putObject.Tags = TagBiz.NormalizeTags(putObject.Tags);
             await ValidateAsync(putObject);
             if (HasErrors) return null;
@@ -120,7 +125,7 @@ namespace AyaNova.Biz
             }
             await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserId, dbObject.Id, BizType, AyaEvent.Modified), ct);
             await TagBiz.ProcessUpdateTagsInRepositoryAsync(ct, putObject.Tags, dbObject.Tags);
-            return dbObject;
+            return putObject;
         }
 
         ////////////////////////////////////////////////////////////////////////////////////////////////