Hi,

Yesterday I copied and pasted one of my 2013 SPD workflows to a new one. All passed well, but my workflow failed on the start with the following error:

RequestorId: 1a9862c8-3314-4e2a-a3e8-85d79f2cd7c9. Details: System.ArgumentException: ContentTypeId 
at Microsoft.Activities.Hosting.Runtime.Subroutine.SubroutineChild.Execute(CodeActivityContext context) 
at System.Activities.CodeActivity.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) 
at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation)

The words about ContentTypeId helped me to identify the cause of the issue quickly. In my new workflow task list defered from the one in the old. Hence, it didn’t have my custom task content types and WF failed when tried to create a task.

So, the solution is pretty simple: Make sure whether your task list contains your custom task content types. If you remeber that you have added them, check whether your WF uses that list (maybe your WF uses another one).

Hope it saves somebody some time.

Regards, Michael.

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