1, the transaction password is not set. Some banks need to set a credit card password to spend. Advise customers to check whether they have a password. If not, they should set the password first.

2. The credit card magnetic stripe/chip is damaged, resulting in degaussing. Customers are advised to contact the bank to handle and replace a complete new card.

3. There is something wrong with the POS machine that swipes the card, and the customer should be able to spend normally by changing the POS machine.

4. It is forbidden for consumers to conduct credit card transactions in banks, such as real estate and wholesale.

5. If the consumption amount exceeds the credit limit of the card, the customer can only use another payment method to pay for the transaction.

6. The credit card may not be activated successfully and the account status is abnormal. It is recommended to try activation again.

7. When swiping the card, the password was entered incorrectly. The customer only needs to enter the correct password. Be careful not to enter the wrong password too many times in a row, otherwise the card is likely to be locked (usually three times).