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

  SEVERE:  Subqualifiers are not allowed for the negative form of this
  qualifier.   For  example,  /NOWARNINGS  is correct but /NOWARNINGS=
  NOINFORMATIONALS is not allowed.

  USER ACTION:  Use the positive form of the qualifier.  For  example,
  /WARNINGS=NOINFORMATIONALS.