Can I block creating sub-tasks under the epic?

[Sebastian Bijak]

Hi Everyone

I would like block creating sub-tasks under the epic (More -> Create sub-task) but keep this functionality in stories/tasks. Is such configuration possible?

[Tarun Sapra · Accepted solution]

Pretty old question

Not supported out of box - https://jira.atlassian.com/browse/JRASERVER-7990

Using script runner plugin you can put an condition in the "validation" phase of the create transition

- https://community.atlassian.com/t5/Answers-Developer-Questions/How-to-Restrict-Creation-of-Subtask-based-on-IssueType-in-JIRA/qaq-p/525797

[Tarun Sapra]

Also possible via some JS hacks to hide the "create sub-task" button, though I avoid writing JS.

[Sebastian Bijak]

Script runner seems to be acceptible since I want to use it for other purpose anyway but I guess that this will work post factum. So "Create sub-task" will be in "More" menu but after clicking it script will block it?

Is this JS hack possible within the Jira?

[Tarun Sapra]

Using script runner plugin, the script will be part of "validate" phase of the "create" transition thus, validation will execute after pressing the "create" button.

If you want a client side solution (though JS solutions arent always the cleanest) you can look into "behaviour module" of the scriptrunner plugin

https://scriptrunner.adaptavist.com/4.3.1/jira/behaviours-overview.html

Please accept/upvote answer if it works for you. Thanks.