VMS Help UIL, Compile Time Errors, ARG_COUNT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ERROR:   The  declaration  of  the  marked  procedure  specified   a
  different  number  of  arguments  than are present in this procedure
  reference.

  USER ACTION:  Check that you are calling the correct  function.   If
  you intend to call the procedure with a varying number of arguments,
  omit the argument list in the procedure declaration.