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.
Environment
Release : 12.5
Component : CA Disk Backup and Restore
Resolution
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.
Sample message: IRR421I ACEE modification detected for user XXXX in address space ID 0x0000003E running under user XXXXX and job name IVP01RPT while program ADSMI002 is running. The RACF function detecting the modification is IRRRCK00. Rsn=0x40000000. (ACEEPRIV is ON). Occurrences 1. Resource=WWWWW.STG.DISK.IVP.PDS(DATASET). Call chain: ADSMI002 See message IRR421I - https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.4.0/com.ibm.zos.v2r4.icha600/irr421i.htm