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Why does it always prompt that the number of digits in the card number is incorrect? Please carefully confirm the credit card number you entered.

Usually there are three reasons:

1. The system is set to a 16-digit card number by default. If you enter a 19-digit bank card number, an error will be prompted.

2. The full-width mode is used when typing. Please confirm whether the full-width mode is used. If the full-width mode is used, please switch to half-width or use the English input method.

3. Website communication failure or website system upgrade, please try again later.

Extended information:

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. It takes the form of a card with the name of the issuing bank, validity period, number, cardholder name and other contents printed on the front, and a magnetic stripe and signature strip on the back. Consumers holding credit cards can shop or consume at specially appointed commercial service departments, and then the bank will make settlements with merchants and cardholders. Cardholders can overdraft within the prescribed limit.

Credit cards are divided into credit cards and quasi-credit cards. Credit cards refer to credit cards in which the cardholder has a certain credit limit and can consume within the credit limit and then repay; quasi-credit card It refers to a quasi-credit card in which the cardholder deposits a certain amount of reserve fund as required. When the reserve account balance is insufficient to pay, the cardholder can overdraw within the specified credit limit. The so-called credit card generally refers to a credit card only.

Features of credit card:

1. Pre-deposit of cash is not encouraged. Spend first and repay later. It enjoys an interest-free repayment period and can repay in installments (with a minimum repayment amount). Join VISA, Master Card, JCB and other international credit card organizations so that it can be used globally.

2. It is one of the fastest growing financial services today and is an electronic currency that can replace traditional cash circulation within a certain range.

3. It has both payment and credit functions. Cardholders can use it to purchase goods or enjoy services, and can also obtain certain loans from card issuers by using their credit cards.

4. It is a high-tech product that integrates financial services and computer technology.

5. It can reduce the use of cash currency.

6. It can provide settlement services to facilitate shopping and consumption and enhance a sense of security.

7. It can simplify the collection procedures and save social labor.

8. It can promote product sales and stimulate social demand.