1. PayPay for Developers FAQ
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  3. When I execute the payment request, the error when SUSPECTED_DUPLICATE_PAYMENT is returned.

PayPay for Developers FAQ

When I execute the payment request, the error when SUSPECTED_DUPLICATE_PAYMENT is returned.

If there is a payment request for the same merchant and the same amount of money within a short period of time, PayPay will perform checks to prevent unintended double payments. If you want to carry out the same payment in a short period of time, set the value of agreeSimilarTransaction to true and execute the payment request.

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