This message shows the last backup data set qualifier for the last control data set (CDS) backup, where at least the journal has been successfully backed up. If any CDS or journal data set is not successfully backed up, the system issues message ARC0744E for each data set that fails.

If it becomes necessary to recover a CDS, this qualifier is needed to determine which CDS recovery steps are to be used (the steps vary, depending on the data mover used). Determine the data mover used by displaying the backup data set names of the CDSs to be recovered. If 'M' is V, then DFSMShsm is the data mover. If 'M' is D, then DFSMSdss is the data mover. If 'M' is X, then that specific backup has failed. Do not use that backup copy for the recovery. For more data mover information see z/OS DFSMShsm Storage Administration.