The system doesn't seem to have UNIXPRIV SUPERUSER, but rather SUPERUSE w/out the "R":and is it also correct that the RDT defines UNIXPRIV as only 8 characters?:
Release: Component: MSM
That is correct, the UNIXPRIV only allows up to 8 characters in the TSS ADD command. That is why the ownership is SUPERUSE. The TSS PERMIT commands can use up to 39 characters for UNIXPRIV resource classes. These numbers can not be changed by the site. UNIXPRIV is a predefined resource class in CA Top Secret.