To use the YKALCSVC or YKSETENV command, you must restrict user access by using the RACF program control function. Note that you do not need to restrict user access for the YKDSPENV command. For details, see the IBM manual Security Server RACF Security Administrator's Guide. If you use the YKALCSVC or YKSETENV command without restricting user access, Business Continuity Manager might not operate properly.