FMV5126S
Filespaces with duplicate names are not supported. Please unmount
the duplicate filespace.
Explanation
The selected filespace has a duplicate volume label. Because Tivoli Storage Manager uses the volume label to keep track of backup/archive information, it cannot back up or archive files from a filespace with a duplicate volume label.
System action
Tivoli Storage Manager cannot select the volume.
User response
If the filespace needs to be available to the system, exit Tivoli Storage Manager, and assign a volume label to the filespace. Restart Tivoli Storage Manager and retry the operation. Otherwise, unmount the duplicate filespace.