---
url: >-
  https://acquirer-api-docs-v4-en.pingpongx.com/notes/zh/appendix/actionCode/index.md
description: 列出 Visa、Mastercard、Discover 等发卡行响应码，帮助商户理解交易拒绝、接受或需进一步处理的原因。
---
## 发卡行响应码

<v4-ActionCode/>

## Discover 响应码

<v4-ActionCodeDiscover/> 

## 参考资料

<ul>
<li><a href="https://developer.visa.com/request_response_codes#msg_reason_codes">visa developer center</a></li>
<li><a href="https://developer.mastercard.com/mastercard-merchant-presented-qr/documentation/server-apis/response-error-codes/">mastercard developers</a></li>
</ul>