Symptoms

I have a SmartObject event in my workflow that returns three values. I created three data fields to store those values and I'm getting an error with one of them: "28006 Datafield CELPK2Utilities_SaveItemToSPList_MessageDetails not found".

I tried removing the field reference, deleting the field, saving the workflow, closing and re-opening Visual Studio, recreating the field, and adding it back in the event - still got the error message. Now, there is also another issue with the SmartObject itself that I am working with a developer to resolve, but it does not appear to be related to this field. But if you could assist me with determining that, I would appreciate it.
 

Diagnoses

Repo-steps:
-The test workflow contains a smartobject event (process datafield is set to Boolean. Instead, it should set to String datatype).
-The process instance fails because the expected returned value is String and not Boolean.
-I add a new process datafield to the workflow and redeploy the workflow. When I try the error instance from VS’s K2 Process Management, I receive the same error message (28006 Datafield … not found), and the process instance went into a black error state.
 

Resolution

The issue was reproducible in my test environment. I suggested that a work around for the error message ‘28006 Datafield datafield_name … not found’ is not to map the process datafield to the returned smartobject property or leave it blank (i.e. I would not map the CELPK2Utilities_SaveItemToSPList_MessageDetails to the return smartobject propety MessageDetails, redeploy the workflow again, and retry the error instances with the new version of the workflow). This should fix the error instance.