This means that the bank has restricted the consumption function of the credit card and cannot make consumption. The Bank of Communications credit card shows that single card consumption is restricted for the following reasons:

First, the card status is abnormal, such as It has been degaussed, and the password has been locked after entering the wrong password too many times. It is recommended that the poster call his service hotline to confirm;

Secondly, there is no problem with the card, the POS machine signal is not good, and it is not connected to the network. It will cause the transaction to fail;

Thirdly, if you hold an IC chip credit card, since UnionPay has closed the downgrade transaction function, if the cashier still operates the transaction by swiping the card instead of inserting the card, it will also cause It cannot be used;

Fourth, the card does not support transactions. For example, visa single-logo cards/jcb single-logo cards do not support UnionPay transactions, nor do they support some online transactions.