Library /sys$common/syshlp/helplib.hlb — LBR Routines, LBR$LOOKUP_KEY, Condition Values Returned
LBR$_ILLCTL Specified library control index not valid.
LBR$_INVRFA RFA obtained not valid.
LBR$_KEYNOTFND Specified key not found.
LBR$_LIBNOTOPN Specified library not open.