SilcBuffer
    silc_command_reply_payload_encode_va(SilcCommand cmd,
                                         SilcStatus status,
                                         SilcStatus error,
                                         SilcUInt16 ident,
                                         SilcUInt32 argc, ...);

    Same as silc_command_payload_encode_va except that this is used to
    encode strictly command reply packets.  The `argc' must not count
    `status' and `error' as arguments.  The `status' includes the
    command reply status.  If single reply will be sent then it includes
    SILC_STATUS_OK if error did not occur.  It includes an error value
    if error did occur.  In this case `error' field is ignored.  If
    there will be multiple successful command replies then the `status'
    includes a list value and `error' is ignored.  If there will
    multiple error replies the `status' includes a list value, and
    the `error' includes an error value.  Thus, the `error' value is
    specified only if there will be list of errors.

    Protocol defines that it is possible to send both list of successful
    and list of error replies at the same time, as long as the error
    replies are sent after the successful replies.