Do you already know what the new Update credential owner notification is about? This notification will notify us when a credential has changed its owner because the one who created it is no longer an active user of the ARM platform since he left the platform for 90 days or no longer has access to the organization. 

Thanks to this reassignment, the existing credential will not be deleted or deactivated, and this will not interrupt tasks such as cloning repositories and accessing inputs that have them.