Deleting old storage lifecycle policy versions
When a version of a storage lifecycle policy is no longer the active (or most recent) version, the version is subject to deletion. NetBackup automatically deletes the inactive version after all the copies that refer to it have finished processing. When the copies are complete, they are considered SLP-complete.
By default, NetBackup deletes an inactive SLP version after 14 days.
The following parameters in the SLP settings host properties apply to version deletion:
Cleanup interval (SLP.CLEANUP_SESSION_INTERVAL)
Unused SLP definition version cleanup delay (SLP.VERSION_CLEANUP_DELAY)