Script Runner Not creating subtasks

I've tried everything in the sun and cannot for the life of me get the Create Subtask post-function to work using Script Runner.

The user executing the transition has permission to create issues.

The target subtask is a valid issuetype in the project.

The workflow it's using is the classic workflow.

The field configuration scheme for the issue type is also the default and has no restrictions.

There's nothing special in the actual post function itself, just a 'Create Subtask' task.


I looked in atlassian-JIRA and could not find anything helpful other than: 

2015-09-30 09:52:15,368 http-bio-443-exec-24914 ERROR awhite 592x7901709x3 19ulta1 /secure/CommentAssignIssue.jspa [scriptrunner.jira.workflow.ScriptWorkflowFunction] Script function failed on issue: HREO-15, actionId: 51, file: null


Any ideas?

3 answers

Do you have a validation on your subtask create step that requires an Assignee?

Hi there, Nope. Only: Only users with Create Issues permission can execute this transition.

After the log message you posted there should be a stack trace - is there not one?

Is HREO-15 the parent issue?

Can you attach a screenshot of the configuration of the workflow function. I was unable to find any other error message in atlassian-jira.log. And yes, HREO-15 was the parent issue.

Any ideas Jamie?

Can you set the log level to debug: - then doing the failing transition, then post the whole log. If it's private you can create a ticket at

Thanks Jamie. How do I turn off logging once I am done?

change the DEBUG to WARN and rerun.

Have you tried bob swift JIRA create on transition?  It allows you to create tasks and sub tasks on transition quite easily. Great add on. 

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