The credit card status is abnormal, the credit card limit is insufficient, the current transaction is risky, and the bank rejected this transaction.

1. Abnormal credit card status: If the credit card is subject to bank risk control, freezing, or payment stop, you cannot scan the QR code to pay. Users can contact bank customer service to learn about the status of their credit cards and seek solutions.

2. Insufficient credit card limit: Payment cannot be completed if the credit card limit is insufficient. Users can choose to change card payment and apply for a balance increase from the bank.

3. There are risks in the current transaction, and the bank has rejected this transaction: In order to ensure the safety of funds, the bank will systematically evaluate each transaction. If there are risks in the transaction, the bank will reject the transaction, causing the credit card scan code payment to fail. .