You can cancel a job from the WRKACTJOB screen.
If you are running interactively,
Hold down SHIFT, hit ESC
Option 2 will end your job
Most likely it’s a submitted job running under QBATCH.
First you want to check the queue to see if there is anything in the queue after it that you may want to delete.
Use 4=End or 3=Hold to remove or hold any entries you don’t want to run after you end the current backup job.
Now you can go to the QBATCH subsystem and end the current backup job.
Place a 4=End beside the backup job and press F4
Change “How to end” “*CNTRLD” to “*IMMED” and press <Enter>.
Tip: You can end multiple job simultaneously by placing a 4=End beside each of the jobs you want to end then placing “OPTION(*IMMED)” on the command line and pressing <Enter>.