1. PayPay for Developers FAQ
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  3. What is AssumeMerchant?

PayPay for Developers FAQ

What is AssumeMerchant?

AssumeMerchant is an identifier for identifying a merchant in the case of a client in which multiple merchant IDs (MIDs) are linked under one ClientID.
By setting this in the header or query, it is possible to identify at which merchant the payment is made.

AssumeMerchant is not required if there is only one merchant associated with ClientID.

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