This enhancement request came in during a support issue discussion. I am submitting it to the community for them. Vote up if you would also like to see this enhancement built into TSS.
The DB2 v11 IBM documentation says:
When the AUTHEXIT_CACHEREFRESH subsystem parameter is set to ALL and the access control authorization exit is active, DB2 listens to type 62, type 71, and type 79 ENF signals from RACF.
This customer would like to have ENF79 support in TSS for auditing purposes.