Dp with User Permissions

What is the role of USER in Backup
The backup owner is different

If your backups are configured to run as private, the user starting the
backup is the owner of the data. For example, if user A performs a fullbackup and user B tries to start an incremental backup, the incrementalbackup will be performed as a full backup. This is because the data foruser A is private and cannot be used as a base for user B’s incrementalbackup. The same problem occurs if user A performs a full backup, then user B performs an object copy session, and the original is exported or overwritten. User A cannot perform an incremental backup because the full backup (the copy) now belongs to user B.
Action
Configure backup ownership in the advanced backup specification options. The backup owner should be in the Admin user group. This willmake this user the owner of all backups based on this backup
specification, regardless of who actually starts the backup session.