If you have elected to enable ACEE protection using RACF's ACEECHK, you also need to add CA Disk to the exclusion list. The ACEE is modified for System Administration mode and other Auto-Restore functions.
Release : 12.5
Component : CA Disk Backup and Restore
The ACEE protection is not activated by default in RACF, so if it is not activated, you are not concerned. If your site has enabled the RACF ACEE with SETROPTS CLASSACT(ACEECHK) and you also plan to enable CA Disk USERMOD5, then be aware that message IRR421I will be issued for each step in a CA Disk job.