At least one DASD version that is eligible to be expired and rolled off has a partial dump associated with it. For the DASD used by the version to be freed, possibly for a new DASD version to be created, the expired version must be rolled off.
None.
To free the DASD used by the expired versions, the partial dumps must either be completed with the FRBACKUP DUMPONLY command, forced to be rolled off with the FORCE keyword on the FRBACKUP command or the FRDELETE command can be used to delete either the partial dump or DASD version of the copy pool.
DFSMShsm