How can I remove a user access without loosing tickets and deactivate their licence accounts to reduce licence costs
When you remove a user all their tickets will remain in Jira. No need to worry about losing data when removing/ deactivating users.
@natalia.daraszkiewicz , conventional best practice is not to delete but simply deactivate. Of course your practice/process can be different and the ability to delete is certainly there. If you are to delete I would recommend first finding every record where the user exists and change it to another user. Maybe a default user?
You can "disuser" accounts with a flag in the user's profile in site management, or just remove them from the group(s) that let them use the application (if, for example, a user has access to Jira because they are in the group "Jira-software-users", then removing them from the group removes their access, and reduces the licenced user count)
Neither of those will affect the data on your issues. But the user will no longer be selectable when changing fields like assignee.
To the awesome folks here on Community! My name is Jehan and I'm a product manager on Jira Service Management. We are looking to talk to any of you out there that use our product for non-technical ...