VMS Help DCE_SECURITY, Admin Intro, DCE$EXPORT, Messages, EXP_NAMEINUSE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  OpenVMS username <username> already mapped to another DCE principal

         Explanation:

         OpenVMS username specified is already associated with another
         DCE principal in the DCE$UAF file.

         User Action:

         Specify a username that is not associated with a DCE principal.
         Use the DCE$UAF utility to search the DCE$UAF file for usernames
         and associated DCE principal names.