The credit card limit is insufficient, and the card itself is the problem.

1. Insufficient credit card limit: If your CITIC credit card limit has been used up, you can't swipe your card on the POS machine. You can check your credit card limit to make sure you have enough credit to pay.

2. Problems with the card itself: If your CITIC credit card is expired, frozen or damaged, you will not be able to swipe your card on the POS machine. Check the status of your credit card to make sure it is normal.