Credit cards are not allowed to trade this card, generally because of the reasons of the issuing bank, the problems of the credit card itself, the risk of credit card being stolen, the network or equipment failure, and the cardholder is suspected of cashing out. After being told that this card transaction is not allowed, the cardholder can call the credit card center of the relevant bank to solve the problem.

The reason for the issuing bank is generally due to the upgrade of the bank, and the cardholder needs to contact the relevant bank to solve it. If the cardholder encounters network abnormality or the pos machine fails during offline payment, the credit card transaction is not allowed. It is also possible that the chip of the credit card has failed, and the cardholder needs to take the credit to the relevant bank to change the card. When the credit card balance is insufficient. When the credit card amount exceeds the payment limit, the credit card is frozen, etc. , the credit card will not allow this card transaction.

When the number of cardholders is operated on the same pos machine for months, the bank will judge that the cardholder is suspected of cashing out. Moreover, when the cardholder activates the credit card, the credit limit will be brushed off, or the cardholder has transactions outside normal business hours, and swipes the card on the same pos machine on a fixed date every month for integer transactions. These situations will be judged by the bank as the cardholder is suspected of cashing out, and the credit card will refuse the transaction. If the cardholder's credit card is swiped overseas, the bank will judge that the credit card has been stolen and refuse the transaction.