Most of the cleaning tapes are showing as expired even though they haven't been used.
How do I "unexpire" them?
It's depend where you got this information. For SL3000 autocleaning can be managed on different level:
- SL3000 semself
- Backup/Storage software.
In case you say about semself SL3000 autocleaning - you can just export Cleaning Cartridges and import it's again.
https://docs.oracle.com/cd/E19317-01/en/316194401AD/316194401AD.pdf page 383