After the credit card is bound to the mobile payment platform, you can also scan the code directly to complete the payment. In addition, some banks have also opened their own two-dimensional code payment services, and mobile banking that directly scans banks can also complete payment.

1. It may be that the cardholder's credit limit is insufficient, and the remaining credit limit of the credit card is not enough to pay the transaction amount that the user needs to pay, which leads to the payment failure.

2. Abnormal credit card status will also lead to the failure of credit card scanning code payment, which may be the cause of bank risk control.