---
url: >-
  https://acquirer-api-docs-v4-en.pingpongx.com/en/notes/notify/bindNotify/APM/accTokenCancelMerchant/index.md
description: >-
  The merchant unbinding notification interface is used to receive notifications
  when merchants cancel their payment service binding. It is suitable for
  scenarios that require real-time awareness of merchant status changes,
  supporting asynchronous notification reception. Key parameters include
  merchantId (merchant ID) and cancelTime (cancellation time).
---
# Merchant Unbinding Notification

```apidef
endpoint: POST tokenization.apm.accTokenCancelMerchant
name: Merchant Unbinding Notification
summary: Merchant-initiated APM cancellation webhook
variant: APM
tags: Notify, Tokenization, APM
```

The merchant unbinding notification interface is used to receive notifications when merchants cancel their payment service binding. It is suitable for scenarios that require real-time awareness of merchant status changes, supporting asynchronous notification reception. Key parameters include merchantId (merchant ID) and cancelTime (cancellation time).

## 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\":\"Boost\",\"merchantUserId\":\"1260489643332523151\",\"token\":\"60a33bc16fa8251d6207e6398a572458\"}",
  "clientId": "2022102018024210348",
  "sign": "CFBD974882298A92AA0D018630CAD002F416AB44131DB4D7F8A5B8B042312DB4",
  "signType": "SHA256"
}
```