2. UnionPay channel failure.

3. The bank will settle the upgrade of the banking system on working days.

4. The customer didn't sign in person, which made it impossible to sign.

5. The card swiping time is wrong.

6. The machine does not issue tickets or issues tickets abnormally.

Credit card, also called debit card, is a credit certificate issued by a commercial bank or credit card company to eligible consumers. It is a card with name, expiration date, number and cardholder's name printed on the front, and a magnetic stripe and signature strip on the back.