The following diagram presents the syntax of the HCANCEL command for both SMS-managed and non-SMS-managed data sets:

>>-HCANCEL--+----------------------------+---------------------><
            +-+-REQUEST-+--(--num--)-----+   
            | '-REQ-----'                |   
            +-USERID--(--userid--)-------+   
            '-+-DATASETNAME-+--(--dsn--)-'   
              '-DSNAME------'