Error when reassigning a custom task process

Question

Hello!
I have an error when reassigning a custom task process.
That is what I see at the workflow history: Task assigned to xxx was delegated by xxx. Coments: xxx
However in the second line of the history an error is shown with the following information:
Event type: error
User ID: System account
Description: An error has occurred in nameofthetask
No new task is created for the user who the task was reassigned to.
Any help would be appreciated

Answer 1

Hi，
From the error message， I
guess that you come across an OOTB Approval
Workflow.
When you define your workflow, there is a section "Enable content Approval Workflow Activities", where you can check "Update the approval status after the workflow is completed (use
this workflow to control content approval)". If you check this option, and you do not have content approval enabled on the library level, you get the system account error message. If you do not check it, everything works fine.
Or you can go to the document library settings and go to Versioning Settings Page, set "Require content approval for submitted items to?" to yes and everything should be fine.
Refer to  the following blogs about the similar issue:
http://mossnwss.blogspot.com/2008/10/workflow-error-system-account-error-has.html
https://sharepointtechs.wordpress.com/2011/11/18/workflow-error-an-error-has-occurred-in-approval/
Besides, here is a similar post, you can use as a reference:
https://social.msdn.microsoft.com/Forums/en-US/fff5ee1f-904b-4a95-989f-c5a079cdf666/workflow-error-system-account-an-error-has-occured-after-workflow-completed-moss-2007?forum=sharepointcustomizationlegacy
Best Regards，
Lisa Chen
TechNet Community Support
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