VMS Help FORTRAN, Error Messages, Compilation Errors, NESTPARDO  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  SEVERITY:  E

  MESSAGE TEXT:  Nested parallel DO-loops not permitted, directive
  ignored

  EXPLANATION:  A parallel DO-loop directive (CPAR$ DO_PARALLEL) was
  detected within a DO-loop that was already marked as parallel.
  Nested parallel DO-loop directives are not supported.