Programming considerations

  1. $WAIT is not allowed in EXIT49.
  2. Exit 49 can perform duplicate job name check and instruct JES2 to bypass the normal duplicate job checks it would perform. You can also use the exit to allow a duplicate jobname to execute under certain situations. Setting X049NDUP causes JES2 checking for selected job to be bypassed.
  3. To determine the class list that is used when selecting jobs or to determine or influence whether selectable work exists for a specific job class within the current checkpoint cycle, see Programming considerations for an explanation.