When moving volumes from a non-system-managed to a system-managed IBM automated tape library, update the DFSMSrmm control data set to reflect the new locations for the volumes. Issue the RMM CHANGEVOLUME subcommand on the DFSMSrmm system to update both the home location and current location of the volumes. To return volumes from a storage location to a system-managed instead of a non-system-managed IBM automated tape library, use the RMM CHANGEVOLUME subcommand to change the home location for the volumes. See Defining pools: VLPOOL for information about retaining and moving volumes.