VMS Help SOR Routines, SOR$SPEC_FILE, Condition Values Returned  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    SOR$_ENDDIAGS      Completed with diagnostics.
    SOR$_NYI           Not yet implemented.
    SOR$_SORT_ON       Sort or merge routine called in incorrect
                       order.
    SOR$_SYSERROR      System service error.