How to use Sandbox App?
How to use pending_payments properly?
Please tell me the status and timing when the cancellation API (Delete a Code, Cancel a payment, Revert a payment authorization, Refund a payment) can be used.
As a result of executing Refund a payment, the response status is "CREATED". What is this like?
How can I determine the success or failure of payment?
Is the orderItems item displayed to users from the app?
If the user's confirmation is required at the time of Capture (payment confirmation), how many hours do I have to obtain the user's confirmation?
If a timeout occurs on the PayPay side, is the cancellation process executed by PayPay? If so, what should the merchant system do?
After being notified by Pending Payments,how do users pay?
What types of webhooks does PayPay notify?