Beginning with z/OS Version 1 Release 11, RACF® accepts information about the identities of distributed users from authorized applications that issue the RACROUTE REQUEST=VERIFY request or the initACEE callable service (IRRSIA00).

Beginning with CICS® Transaction Server (CICS TS) for z/OS® Version 4 Release 1, supported z/OS transactions can pass distributed user names and realm information to RACF. For information about implementing this support, visit CICS Transaction Server for z/OS Information Center.