diff --git a/Modules/Synchronization/src/Synchronization.Application/SyncRuns/Commands/StartSyncRun/Handler.cs b/Modules/Synchronization/src/Synchronization.Application/SyncRuns/Commands/StartSyncRun/Handler.cs
index 956d8414e5..435ccc95db 100644
--- a/Modules/Synchronization/src/Synchronization.Application/SyncRuns/Commands/StartSyncRun/Handler.cs
+++ b/Modules/Synchronization/src/Synchronization.Application/SyncRuns/Commands/StartSyncRun/Handler.cs
@@ -133,7 +133,7 @@ private async Task<SyncRun> CreateNewSyncRun(IEnumerable<ExternalEvent> events)
         }
         catch (DbUpdateException ex)
         {
-            if (ex.HasReason(DbUpdateExceptionReason.DuplicateIndex))
+            if (ex.HasReason(DbUpdateExceptionReason.DuplicateIndex) || ex.HasReason(DbUpdateExceptionReason.UniqueKeyViolation))
                 throw new OperationFailedException(ApplicationErrors.SyncRuns.CannotStartSyncRunWhenAnotherSyncRunIsRunning());
 
             throw;