Specifies the user name or userid of the user on the Windows domain.
If you specify a userid, it must be the Windows security ID (SID) and you
must prefix it with ID:. For example, ID:S-1-5-21-427903388-3687960729-265688067-1115.
Specifies the user name or the userid of the user on the UNIX domain.
If you specify a userid, it must be the UNIX userid (UID) and you must prefix it
with ID:. For example, ID:6038.