VMS Help CC, Messages, VARIANTTAG  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        A variant struct or union cannot have a tag.

 Description    A variant_struct or variant_union declaration
                specified a tag name.  This is not allowed.

 User Action    Either remove the tag or change the declaration to be
                a regular struct or union instead of a variant struct
                or union.