DFSMSrmm automatically confirms volume moves during cartridge entry processing. When you manually confirm the moves for volumes to an automated tape library, DFSMSrmm checks for the volume and library name in the TCDB and only confirms movements if the volume is library resident. DFSMSrmm If there is a mismatch between the information in the TCDB and the DFSMSrmm control data set, use the RMM CHANGEVOLUME subcommand with the LOCATION operand to update the destination information in the control data set to match the library name in the TCDB.

If a volume is returning to a manual tape library, there is no automatic confirmation. You must explicitly confirm that the move has taken place when the volume is entered into the library. When you confirm that a volume has moved to a manual tape library, DFSMSrmm requests that the volume location in the TCDB is updated with the new location. DFSMSrmm also changes the volume location information in the TCDB when you issue the DFSMSrmm CHANGEVOLUME volser LOCATION (mtl_name) to change the volume location to a manual tape library.

If you specify the RMM CHANGEVOLUME subcommand with the EJECT operand for a volume for which no move has been identified, DFSMSrmm does not set a destination for the volume but the volume is set to be 'intransit'. Once the volume is ejected and cannot be entered again, you should specify the location where the volume is placed and then confirm the move.

When you specify the RMM CHANGEVOLUME subcommand with the LOCATION operand, DFSMSrmm sets a destination for the volume. You only need to confirm the move after the eject.