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

    LBR$_ILLCTL        Specified library control index not valid.
    LBR$_ILLIDXNUM     Specified library index number not valid.
    LBR$_KEYNOTFND     Librarian did not find any keys with the
                       specified RFA.
    LBR$_LIBNOTOPN     Specified library not open.