Common
- What are the application items required to connect to the production environment?
- What is the restriction of IP address in using OpenPayment(OPA)?
- Where can I find MERCHANT_ID, API_KEY, and API_SECRET in "PayPay for Developers" to use in building the SDK?
- Can I change my API key and secret?
- Does the API credential information (api key, apiKeySecret) have an expiration date?
- When handling multiple merchant, are the API credential information (api key, apiKeySecret) different for each?
- What is AssumeMerchant?
- What happens if you make payment multiple times with the same merchantPaymentId?
- I would like to make a refund from PayPay for Business, what should I do?
- I got an error USER_STATE_IS_NOT_ACTIVE when I performed an Increase Capture.What is the cause of this error?
- Is it possible to set query parameters in the redirect URL?
- Can I add multiple users to PayPay for Developers?
- What value should I set for the value of currency parameter?
- How do you use the "deviceId" when creating an account link QR code?
- What are the cases of payment failure?
- Can I change the merchant name and logo image?
- How I can check wallet balance?
- How can I confirm if the user has terminated his/her user account?
- What is the expiration date for get payment detail?
- Is it possible to separate sales details for each product?
- Is it avaliable for user to use same PayPay MiniApp account on different devices?
- Can I create testing for error cases?
- What happens if payment, etc. is conducted during PayPay maintenance?
- Tell me how to conduct a test in a real store before going live.
- Tell me how to check user authorization expiration.
- Tell me how to handle an UNAUTHORIZED(08100016) error under the test environment.
- I have received an error response on API during development. Tell me how to handle it.
- Is it allowed to conduct a load/performance test in the test environment?
- Tell me how to handle API timeout.
- Tell me how to handle when API response returns CANCELED_USER.