In new gen projects, can I block tickets from being moved to DONE if NOT all subtasks are DONE?

[William Granli]

The behavior I want to stop is that developers can move the main ticket to DONE when its subtasks aren't completed yet. 

This is possible in workflows in classic projects, but I can't find any functionality for it under workflows => rules in new gen projects. 

Thanks!

[Hakeem Olasupo · Accepted solution]

JIRA does not have a native functionality to close a sub task once the parent issue is closed.

If you want to define a rule like close all the sub-tasks before parent closes, you will need to set up a post function. For that you can add “Sub-Task Blocking Condition” as Alana suggested or you can use third party add-ons.