Control Options OMVSUSR and OMVSGRP are no longer going to be used in z/OS 2.1.
Can they be turned off?
Release: TOPSEC00200-15-Top Secret-Security
To turn off the OMVSUSR and OMVSGRP control options:
TSS MODI OMVSUSR()
TSS MODI OMVSGRP()
Be sure to also remove the control options from the CA Top Secret parameter file.