Pay-in Callback Notification

When a pay-in order is successfully completed or fails, the platform will actively send an asynchronous callback notification to the notifyUrl provided by the merchant during order creation.

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Notification Protocol

• Endpoint: The notifyUrl submitted by the merchant during order creation.
• HTTP Method: POST
• Content-Type: application/json; charset=utf-8
• Retry Strategy: Upon receiving the notification, the merchant system must respond with SUCCESS (case-insensitive, or HTTP 200) to confirm successful reception. If the platform does not receive a successful response, it will retry every 20 minutes, up to 5 times.

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Request Header Parameters

Parameter	Required	Type	Description
merchantNo	Yes	string	Merchant Number
sign	Yes	string	Platform Signature. The merchant must verify it using the Platform Public Key (Refer to Global Specification).

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Request Body Example

{
  "timestamp": "1639466186292",
  "merchantOrderNo": "ORDER_123456789",
  "platOrderNo": "876324486452871168",
  "amount": "100.00",
  "fee": "1.00",
  "status": "3",
  "msg": "success",
  "remark": "custom_data"
}

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Request Body Description

Parameter	Required	Type	Description
timestamp	Yes	string	Timestamp
merchantOrderNo	Yes	string	Merchant Order Number
platOrderNo	Yes	string	Platform Order Number
amount	Yes	string	Transaction Amount
fee	Yes	string	Service Fee
msg	Yes	string	Response Message
status	Yes	string	Status: 0 Initialization, 1 Processing, 2 Failed, 3 Success
remark	Yes	string	Custom remarks passed by the merchant during order creation (echoed back unchanged)