IC credit card, also known as chip credit card, is a bank card with chip as the medium. Generally speaking, the chip card has a large capacity and can store information such as keys, digital certificates, fingerprints, etc., which provides cardholders with the convenience of using one card for multiple purposes. At the same time, compared with traditional magnetic stripe credit cards, IC credit cards are more secure. However, when using IC credit card transactions on the terminal, sometimes the chip may be damaged or the chip may not be read, and the financial transactions are still allowed to be completed by using the magnetic stripe. This process is called degraded transactions.

Credit card downgrade transaction refers to a transaction mode in which the magnetic stripe chip composite card is stuck on a payment terminal (such as a POS machine), and the chip card cannot be used for transaction, but the magnetic stripe method is used for payment.

if it is shown that the bank card does not support degraded transactions when paying by credit card, it may be due to the damage of the bank card, the failure of the payment terminal, etc. If it is found that there is no failure of the payment terminal after inspection, it is necessary to contact the staff of the bank to ask them to find out the reasons and solve the problems.