In this example, you are issuing the HALTERDS command to change the number of backup versions of the data set CRPA.COMTEST.CLIST from the number of versions that was previously specified to the number of versions specified by the system programmer. You are changing the maximum frequency of creation of backup versions of the data set so that DFSMShsm creates a backup version every four days during automatic backup, provided you changed the data set.

HALTERDS 'CRPA.COMTEST.CLIST' SYSVERSIONS FREQUENCY(4)