---
url: >-
  https://acquirer-api-docs-v4-en.pingpongx.com/en/notes/notify/bindNotify/cof/accTokenCancelMerchant/index.md
description: >-
  The merchant unbinding notification interface is used to receive asynchronous
  notifications when merchants cancel their bindings. It is suitable for
  scenarios that require real-time awareness of merchant binding status changes,
  supporting key features including instant notification through callback URL,
  providing important information such as merchant ID and cancellation reasons,
  ensuring the platform can respond and handle related business changes in a
  timely manner.
---
# Merchant Unbinding Notification

```apidef
endpoint: POST tokenization.cof.accTokenCancelMerchant
name: Merchant Unbinding Notification
summary: International-card unbind webhook
variant: International Card
tags: Notify, Tokenization, CardOnFile
```

The merchant unbinding notification interface is used to receive asynchronous notifications when merchants cancel their bindings. It is suitable for scenarios that require real-time awareness of merchant binding status changes, supporting key features including instant notification through callback URL, providing important information such as merchant ID and cancellation reasons, ensuring the platform can respond and handle related business changes in a timely manner.

## Request Parameters

| Parameter | Type | Required | Description |
|--------|------|------|------|
| accId | string | M | PingPong Store Number |
| clientId | string | M | PingPong Merchant Number |
| sign | string | M | Signature |
| signType | string | M | Signature convention, supports MD5, SHA256, for details see the Signature Convention: /en/notes/guide/sign/ section in this article, all parameters participate in the signature |
| bizContent | string | M | Response parameters are passed as a whole, with no limit on length |
| └─ notifyType | string | M | Notification Type |
| └─ payMethod | string | M | Payment Method |
| └─ merchantUserId | string | M | User ID |
| └─ token | string | M | Authorization Token |

### Request Example

```json
{
  "accId": "2022102018024210348883",
  "bizContent": "{\"notifyType\":\"ACCESS_TOKEN_CANCEL_OF_MERCHANT\",\"payMethod\":\"Mastercard\",\"merchantUserId\":\"12604896432523150\",\"token\":\"97b4e5b9fb4e53727ef7cbf0b25a3d42\"}",
  "clientId": "2022102018024210348",
  "sign": "0C79CCE3BCAFEE1FE070AD82E18C73DEC37916ACD19EB4B4B7B950C398839F26",
  "signType": "SHA256"
}
```