Library /sys$common/syshlp/basichelp.hlb Compile time errors, RADNOTSUP  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ERROR - A literal constant specifies a radix.   For  example,  in  the
  following DECLARE statement, H is an invalid radix specifier:

       10 DECLARE LONG CONSTANT A = H"111"

  Specify a valid radix.