From this thread: https://pisquare.osisoft.com/thread/36550-af-audit-trail-cleanup i learned that there is an option to prune the Audit Trail.
As a system admin i would be able to configure this properly from AF as e.g. a server setting. Ideally i would like to have different retention periods for each AF database
ADMIN RESPONSE
Aug 19, 2022
The AF audit trail is a system wide capability. We currently do not have any plans to implement retention periods for each database.