Overrides

In an APPC scheduling environment: In both JES2 and JES3 systems the ROOM parameter on the OUTPUT JCL statement overrides the room defined in the RACF® profile. The room in the RACF profile overrides the room defined in the transaction initiator's job statement.
In a non-APPC scheduling environment: In both JES2 and JES3 systems, the ROOM parameter on the OUTPUT JCL statement overrides the 4-character room field defined in the JES2 accounting parameter on the JOB statement.