| | Cancel Purpose: Use the CANCEL command to end an active job, started task, or time-sharing user immediately. 
C {jobname }[,DUMP][,A=asid
{U=userid }
{[jobname].identifier}
or
C UUU |
Parameters jobname  | The name of the batch job, started task to be canceled. | | The name of a started task is determined based on whether the JOBNAME= keyword was specified on the START command | | The user ID of the time-sharing user you want to cancel. | | If the user is just logging on and does not yet have a unique name, you must find out the address space identifier for the user running, see “A=asid” below. |
U=userid | The user ID of the time-sharing user you want to cancel. |
jobname.]identifier | The identifier for the unit of work that you want to cancel, optionally preceded by the job name. |
DUMP | A dump is to be taken. The type of dump (SYSABEND, SYSUDUMP, or SYSMDUMP) depends on the JCL for the job. r CANCEL parameters. |
A=asid | The hexadecimal address space identifier of the work unit you |
UUU Unit address of the mount that is to be canceled or the writer that is to be canceled |
