PayPay for Developers FAQ

When I have got a fault by "Give Cashback to User" API once, after then can I use same "merchantCashbackId" again?

When will the error code INVALID_USER_AUTHORIZATION_ID occur?

At what timing can the execution result of cashback be checked?

Tell me the recommended flow of Cashback including abnormal case.

Tell me how to handle the TRANSACTION_NOT_FOUND error in Check Cashback Details.

Is it possible for merchants to control their cashback resources under the Sandbox environment?

Is it possible to send a push notification using the cashback API?

What is the behavior like when CashbackAPI (/v2/cashback) is executed while merchant's balance is insufficient?

Will a webhook notification be sent in the case of cashback failure due to merchant's insufficient balance?

How does the timeout of Cashback SDK work?