message Check {
    string rro_fn = 1;
    int64 date_time = 2;
    bytes check_sign = 3;
    int32 local_number = 4;
    enum Type {
        UNKNOWN = 0;
        CHK = 1;
        ZREPORT = 2;
        SERVICECHK = 3;
    }
    Type check_type = 5;
    string id_offline = 6;
    string id_cancel = 7;

}