Displaying refunds and cancellation reasons
The following API has an optional parameter called "reason" as one of the request parameters. It is possible to include the reason for the refund or cancellation in this parameter, but it will not be displayed in the PayPay app. However, this may be possible in the future due to changes in the specifications.
- Refund a payment （POST: /v2/refunds）
- Revert a payment authorisation (POST: /v2/payments/preauthorize/revert), which cancels the blocked payment amount from the user's balance.
Notification to the user
In case of cancellation, Cancel a payment (DELETE : /v2/payments/{merchantPaymentId}) the user is not notified.