1. When the user entered the credit card password, he entered the wrong password three times in a row, resulting in the credit card being locked.
2. The credit card has been degaussed or expired due to flooding, friction with metals (such as keys) and letters, and it cannot be used.
3. the 3.pos machine is out of order.
Solution:
1. If it is a credit card problem, the credit card user needs to go to the corresponding bank with his personal second-generation resident ID card (not necessarily to the bank where the account is opened, but it can be handled in a different place), and the bank staff will renew, unseal or replace the credit card for him.
2. If it is a pos problem, you need to provide a new pos card.
Extended data
Precautions for credit card consumption:
1. When swiping your card, please don't put your credit card away from your sight to avoid misuse or theft;
2. Don't sign a blank or unfilled bill at will;
3. Before signing, please be sure to confirm whether the card number and amount listed in the bill are correct, and pay attention to whether the consumption currency and amount expressed in words and figures are correct.
Due to the operating specifications, POS machines in some cities still need to enter passwords. Please enter 6 digits at will. If you spend a lot of money or buy goods that are easy to realize, you should enter an accurate ATM private password.