CASRB0037E A valid SNT administrator sign-on is required to toggle security.

You have not identified yourself as a user with SNT-Update authority, which is required in order to toggle security on or off.
System Action:
Processing continues with activities that do not require this authority.
Resolution:
Provide /u{userid} and /p{password} parameters for a user with SNT-Update authority.
Module:
dfhpcupg
Destination:
Stdout and rdoupgrd.log