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

 Message        This token may not appear in a formal parameter list.

 Description    While processing the formal parameter list of a macro
                definition, the compiler encountered an invalid
                formal parameter specifier.  The macro will be be
                defined and this token will ignored, but that may not
                have been what you intended.

 User Action    Correct the formal parameter list so that it consists
                of a comma separated list of identifiers.