System.ArgumentException: An item with the same key has already been added
Problem
All orders get stuck as Ordered and you get following error message
Log Name: ZervicePoint Source: Process system service Date: 17.8.2015 10:10:39 Event ID: 0 Task Category: None Level: Error Keywords: Classic User: N/A Computer: v-enszzp01.mspzp.local Description: Timestamp: 10:10:39.006 Message: Error processing orders: System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector) at lambda_method(Closure , Object ) at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext() at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source) at lambda_method(Closure ) at System.Linq.EnumerableExecutor`1.Execute() at System.Linq.EnumerableQuery`1.System.Linq.IQueryProvider.Execute[S](Expression expression) at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source) at Zipper.ZervicePoint.OrderComponent.Queries.GetNextOrderToProcess.Execute() at Zipper.ZervicePoint.ProcessSystem.Engine.Detectors.OrderJobsDetector.GetNewOrder() at Zipper.ZervicePoint.ProcessSystem.Engine.Detectors.OrderJobsDetector.ProcessNewOrders() Category: Process.OrderDetection Priority: -1 EventId: 0 Severity: Error Title: Machine: V-ENSZZP01 Application Domain: Zipper.ZervicePoint.ProcessSystem.WorkflowService.exe Process Id: 1532 Process Name: C:\\Program Files\\Zipper\\ZervicePoint\\ProcessSystem\\Zipper.ZervicePoint.ProcessSystem.WorkflowService.exe Win32 Thread Id: 1864 Thread Name: Extended Properties: Event Xml:
Solution
- Search for a service that has two attributes with the same name. (A clue is to check the earliest order that is stucked in "Ordered")
- Terminate all orders made from this service
- The error message might still continue in your Event Viewer although the orders are seems to be processed. You might need to put these terminated orders in "Error state" for the error message to stop