The FACILITY class must be active to enable identity mapping. If it is not already active at your installation, you must activate the FACILITY class using the SETROPTS command.

SETROPTS CLASSACT(FACILITY)

If your installation maintains FACILITY class profiles in storage through SETROPTS RACLIST processing, you must issue the following command to refresh the FACILITY class after you define or alter any profiles protecting the IRR.RUSERMAP resource.

SETROPTS RACLIST(FACILITY) REFRESH