Is there a way specify transitions that require a comment or is it only possible to specify if users/groups must always enter a transition comment ("Must enter state change comments")?
Only at the user/groups. No way to set this transition specific.
It's likely possible to use dispatch or API to catch the specific transitions and stop the users until they enter a comment or viable comment.
That's how I have it setup now, however, I'm all for using as little custom code as possible.
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