Replacing the IBM-Supplied Routine

You can replace the IBM-supplied routine with your routine by:

Renaming the IBM-supplied routine (IEFSD087) to an alias.
Naming your routine IEFSD087
Installing your routine in SYS1.LINKLIB

The external writer will call your routine by default. You can request the IBM-supplied routine by coding its alias on the SYSOUT= parameter. For example:

  //MYDATA  DD  SYSOUT=(H,IBMWRITR)

where IBMWRITR is the alias you've given to the IBM-supplied routine.

Do not code STDWTR as a writer name. STDWTR and INTRDR are and are reserved for JES used as a parameters in the MVS operator's MODIFY command.

In a JES3 system, do not code NJERDR as a writer name. NJERDR is reserved for JES3.