1. The credit card exceeds the maximum limit set by the bank, or it is a single maximum limit. For example, the credit card has a daily limit of 50,000, and the cardholder swipes the card twice, each time for 20,000, and finally swipes the card for 20,000, which is 1 10,000 more than the limit of the day, so that the credit card customer service will remind you that the limit of the day has been exceeded.

2. Credit cards are subject to the risk control of banks, and banks will restrict merchants who frequently swipe credit cards. For example, a merchant is restricted by the bank to swipe his card for 2000 yuan a day, but the cardholder swipes his card for 3000 yuan, which will prompt that the credit card exceeds the limit of the day.