Two special types of service execution process are required to run JCL jobs. These are:
Both types of SEP have a class property. The JOB CLASS of a JCL jobstream must match the class of a batch initiator SEP in order for the SEP to run the job. The MSGCLASS or SYSOUT class must match the class of a batch printer SEP in order for the SEP to print the output.
You can either define permanent batch initiator and printer SEPs or create SEPs during a session that exist only until the end of the session.