'Source GenericValue can not be null' while creating sub-task
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
Creating sub-task errors out with the message: Error creating issue: Source GenericValue can not be null. See the screenshot:
Cause
This error is caused by a misconfiguration of a postfunction introduced by the third-part plugin JIRA workflow toolbox.
Resolution
Change the postfunction order to after the create issue;
Or, remove the postfunction;
Or, contact the plugin vendor to further assistance.
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