z/OS MVS JCL Reference
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On an EXEC statement that calls a procedure

z/OS MVS JCL Reference

If an EXEC statement calls a cataloged or in-stream procedure, the PARM parameter overrides the PARM parameter on or is added to:
  • The EXEC statement named in the procstepname qualifier. The information applies only to the named procedure step. The EXEC statement can have as many PARM.procstepname parameters as the procedure has steps; each PARM parameter must specify a unique procstepname.
  • The first EXEC statement in the procedure if procstepname is not coded; the system nullifies any PARM parameters on any following EXEC statements in the procedure. The information applies to only the first step in the called procedure.

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