Is it possible to pay for 0 yen? August 14, 2024 05:24 No, it is not possible. Related articles Tell me how to handle the UNAUTHORIZED(08100016) error that occurs when switching to the production environment. Cannot redirect to merchant app on Android What are the application items required to connect to the production environment? There are three URLs listed on the endpoint of the specification. Which one should I use? How long is the refundable period?