SS$_NORMAL         Normal successful completion.
    FDL$_INVBLK        Invalid block.
    RMS$_ACT           File activity precludes operation.
    RMS$_CONTROLC      Operation completed under Ctrl/C.
    RMS$_CONTROLO      Output completed under Ctrl/O.
    RMS$_CONTROLY      Operation completed under Ctrl/Y.
    RMS$_DNR           Device not ready or mounted.
    RMS$_EXT           ACP file extend failed.
    RMS$_OK_ALK        Record already locked.
    RMS$_OK_DUP        Record inserted had duplicate key.
    RMS$_OK_IDX        Index update error occurred.
    RMS$_PENDING       Asynchronous operation pending completion.
    RMS$_PRV           Insufficient privilege or file protection
                       violation.
    RMS$_REX           Record already exists.
    RMS$_RLK           Target record currently locked by another
                       stream.
    RMS$_RSA           Record stream currently active.
    RMS$_WLK           Device currently write locked.
    SS$_ACCVIO         Access violation.
    STR$_FATINERR      Fatal internal error in run-time library.
    STR$_ILLSTRCLA     Illegal string class.
    STR$_INSVIRMEM     Insufficient virtual memory.