Not quite. The assignee is not "invalid" at all. If you remove the user and they have assigned issues in the project, it will NOT cause any technical problems. All that happens is that if you try to change the assignee, you will not be offered that user any more. It may cause a minor process problem - for unresolved issues, you probably want to reassign them to other users who will continue to work on the project. So it's worth looking at the list of *open* issues they are assigned to when you remove them from the project.
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
Hi Atlassian Community! My name is Shana, and I’m on the Jira Software team. One of the many reasons this Community exists is to connect you to others on similar product journeys or with comparabl...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs