1, the credit line is insufficient, so you can't use the card;

2. The credit card password is entered incorrectly and the card is locked;

3. Some trading merchants restrict the use of cards;

4. The card is degaussed/damaged/expired.

If the credit card transaction on the POS machine is unsuccessful, please confirm whether the account funds meet the transaction requirements; If the account has sufficient funds, please change the POS to try the operation. In addition, transactions such as transfer can also be conducted through outlets, mobile banking and online banking.