Card machine or credit limit issues.

1. Problems with the credit card machine: If there is a problem with the credit card machine, the amount of the credit card cannot be swiped.

2. Limit issue: If the credit card limit is less than 20,000, you cannot spend 20,000. Therefore, the inability to swipe 20,000 yuan with Minsheng Credit Card is mainly caused by problems with the card swiping machine or the credit limit. A credit card, also called a credit card, is a credit certificate issued by a commercial bank or credit card company to consumers with qualified credit.