风控类
| 返回码 | 说明 | 描述 |
| 200000 | 高风险拦截 | Transaction reject(high risk) |
| 201000 | 有欺诈嫌疑 | Transaction reject(suspected fraud) |
| 202000 | 过期卡 | Transaction reject(expired card) |
| 202001 | 挂失卡 | Transaction reject(stolen or lost card) |
| 203000 | 风控系统异常 | Error on the risk system |
银行类
| 返回码 | 说明 | 描述 |
| 300000 | 交易被拒绝(无效卡) | Transaction declined (invalid card) |
| 300001 | 交易被拒绝(无效校验码) | Transaction declined (invalid CVV) |
| 300002 | 交易被拒绝(有效期错误) | Transaction declined (wrong expiry date) |
| 300003 | 交易被拒绝(持卡人错误) | Transaction declined (account holder not valid) |
| 301001 | 交易被拒绝(参数格式错误) | Transaction declined (format error) |
| 301002 | 交易被拒绝(发卡行不予承兑) | Transaction declined (Do not honor,Please contact the issuing bank to confirm the bank card payment limit) |
| 301003 | 交易被拒绝(超出限额) | Transaction declined (limit exceeded) |
| 301004 | 交易被拒绝(尝试次数过多) | Transaction declined (too many invalid tries) |
| 301005 | 交易被拒绝(超出限制次数) | Transaction declined (maximum transaction frequency exceeded) |
| 301006 | 交易被拒绝(超出商家限额) | Transaction declined (merchants limit exceeded) |
| 301007 | 交易被拒绝(限制卡) | Transaction declined (restricted card) |
| 301008 | 交易被拒绝(过期卡) | Transaction declined (expired card) |
| 301009 | 交易被拒绝(当前卡被锁定或已被挂失) | Transaction declined (card lost) |
| 301010 | 交易被拒绝(个人识别号码不正确) | Transaction declined (Incorrect personal identification number) |
| 301011 | 交易被拒绝(持卡人 3DS 校验失败) | Transaction declined (cardholder authentication verification failure) |
| 301012 | 交易被拒绝(无效金额) | Transaction declined (invalid amount) |
| 301013 | 交易被拒绝(重复交易) | Transaction declined (duplicate transaction) |
| 301099 | 交易被拒绝(其他原因) | Transaction declined (other reason) |
| 302000 | 交易被拒绝(高风险交易) | Transaction declined (High risk transaction) |
| 303000 | 退款失败(可退款金额不足、原交易已取消或正在退款中) | Refund failed(refund volume exceeded or tx reversed or invalid workflow) |
3DS验证
| 返回码 | 说明 | 描述 |
| 400000 | 3DS 认证失败 | Transaction failed (3DS validation failed) |
| 400001 | 用户未开通 3DS 交易 | Transaction failed（customer not participating in 3DSecure program) |
系统错误
| 返回码 | 说明 | 描述 |
| 500000 | 内部网关异常 | Error on the internal gateway |
| 500001 | 内部网关异常(内部服务调用异常） | Error on the internal gateway(invoke internal service error) |
| 500002 | 内部网关异常(状态机异常） | Error on the internal gateway(state machine error) |
| 500003 | 内部网关异常(流程数据不存在） | Error on the internal gateway(invalid workflow |
| 500004 | 内部网关异常(流程已经终止） | Error on the internal gateway(workflow was terminated) |
| 500005 | 内部网关异常(3DS 交易异常） | Error on the internal gateway(threeDSecure transaction error) |
| 500006 | 内部网关异常(处理响应异常） | Error on the internal gateway(analysis response error) |
| 600000 | 外部系统异常 | Error on the external system |
| 600001 | 外部系统请求失败 | Request the external gateway error |
| 600002 | 外部系统响应超时 | Received external gateway response timeout |
