the authorization code of a credit card is an electronic confirmation code that the cardholder agrees to spend after the POS swipes the card and transmits the consumption information to the bank credit card information center, and the bank computer system performs risk analysis and control on this transaction information. A code generated by the issuing bank from five or six numbers, which is used to verify the credit card and approve it at the time of purchase or sale. Credit card authorization codes are unique for each individual transaction, and they are used to ensure safe transactions and avoid fraud.

when paying by credit card, the merchant will first authorize the card before the transaction takes place. This process is immediate and will clarify whether the bank has enough funds and whether the card is stolen or cancelled. The authorization code was developed to avoid generating receipts and excessive paperwork, while still maintaining an audit trail. Once the code is issued and the card is authorized, the funds for the transaction will be captured.

these authorization codes are shorthand methods developed by the payment processor to minimize the number of verification steps in the credit card transaction process. With the increase in the number of credit card transactions, they become necessary. As the acceptance of credit cards by merchants increases and the usage of consumers increases, the transaction volume increases. Especially in the case of e-commerce, enterprises need a quick method to authorize purchases, and it is not feasible to use more troublesome methods to verify the availability of funds in customer accounts.

as payment systems become more and more complex, they become more and more effective in verifying and authorizing transactions on a per-purchase basis. This enables businesses to sell goods and services more flexibly and quickly without worrying about payment errors. Credit card authorization code is the key to this speed and flexibility.

if the "authorization code" of China merchants bank professional edition is given to you by the counter staff when you go to the outlet with a valid ID card and a debit card to be associated, the 16-digit authorization code is printed on the "association receipt", and at the same time, the system will send an authorization code message to your reserved mobile phone (note: it will not be sent if you do not reserve the mobile phone number). After you log in to Professional Edition, the system will automatically prompt you to enter this authorization code. Tips: The authorization code of the professional association card has a validity period of 3 days. If it expires or is entered incorrectly for 5 consecutive times, the association will not succeed. If it expires or loses the authorization code, you need to apply for the association authorization code at the counter again with your ID card and all-in-one card (mobile certificate should be accompanied by UKEY).