DFSMSrmm does not interface with BTLS so volumes are not automatically defined to the BTLS catalog. If you plan to use any of the volumes defined to DFSMSrmm in an automated tape library managed by BTLS, you must also define the volumes in the BTLS catalog using the AMS LIBRARY SETCATEGORY command.

When you delete volumes from DFSMSrmm, if the volumes are managed by BTLS you also need to ensure the volumes are deleted from the BTLS catalog and ejected from the automated tape library, if appropriate.