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Parameter Description

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Last updated: 2026-01-16 19:30:02

Before starting development in the standard merchant mode, the following development required parameters need to be prepared:
Parameter
Description
mchid
Merchant ID (mchid) is the unique identifier for the merchant in the superapp's payment. All payment-related API calls must include this parameter for the superapp's payment to verify the merchant's identity. This ID is provided to the merchant upon successful registration.  
appKey
It is used to sign the payment request, indicating that the request is initiated by the payment module on the developer's server. For details, refer to  Super App as a Service Signature and Verification.
method
Fixed value for virtual payments in mini programs: requestVirtualPayment. Fixed value for virtual payments in mini games: requestMidasPaymentGameItem.
The superapp needs to enable the following features:
1. Enable merchants to complete the onboarding process and provide the merchant with the mchid (merchant ID).
2. Provide the merchants with a feature to set up the AppKey.

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Parameter Description

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Parameter	Description
mchid	Merchant ID (mchid) is the unique identifier for the merchant in the superapp's payment. All payment-related API calls must include this parameter for the superapp's payment to verify the merchant's identity. This ID is provided to the merchant upon successful registration.
appKey	It is used to sign the payment request, indicating that the request is initiated by the payment module on the developer's server. For details, refer to Super App as a Service Signature and Verification.
method	Fixed value for virtual payments in mini programs: requestVirtualPayment. Fixed value for virtual payments in mini games: requestMidasPaymentGameItem.