If you display an expired QR code, an error screen will be displayed. After a certain amount of time has passed, you will be redirected to the specified redirect URL. At that time, the payment Status will remain "CREATED". Also, the codeId of the QR code will become invalid due to expiration.
After receiving the redirect, please check the status on the merchant side and take action such as transitioning to an error page.
When displaying the QR code again, we recommend the following method to generate a new QR code using a new merchantPaymentId.
1. Create a QRCode with new merchantPaymentId without changing other parameters
2. Issue a new QR code (codeId)
3. User makes payment using new QR code