Does the subject want to ask, "Why does CCB prompt to check the card issuer when swiping the card by stages?" The reasons for CCB's credit card installment prompt to check the card issuer are insufficient credit card quota, high security risk, abnormal system or failure, and other reasons.

1. Insufficient credit card limit: When the credit card limit is insufficient to pay for consumption, the banking system will automatically reject the transaction and prompt "Please check the issuing bank" or "Please contact the issuing bank".

2. High security risk: In order to ensure the safety of customers' funds, the banking system will judge whether there is risk in the transaction according to the risk control strategy. If the banking system thinks that there is a security risk in the transaction, it will prompt "Please check the issuing bank" or "Please contact the issuing bank".

3. System abnormality or failure: Sometimes the abnormality or failure of the bank's transaction processing system will also lead to transaction failure, and prompt "Please check the card issuer".

4. Other reasons: such as abnormal bank card status and unstable network connection. , will guide CCB to check the issuing bank by credit card installment.