//SORTWK01  DD  UNIT=3480,LABEL=(,NL)
//SORTWK02  DD  UNIT=3480,LABEL=(,NL)
//SORTWK03  DD  UNIT=3480,LABEL=(,NL)

If DFSORT terminates unsuccessfully and the previous DD statements have been specified, the intermediate storage data sets remain in the system until the step has been successfully rerun or until the data sets have been deleted by some other means.

These parameters specify unlabeled data sets on three 3480 tape units. Because the DSNAME parameters are omitted, the system assigns unique names.