The so-called repayment pre-authorization is a transaction in which the card issuer or its agency confirms the permission to freeze the amount before the cardholder makes payment. In other words, pre-authorization refers to a transaction that requires the card issuing department to make a commitment to the merchant for future payment when the customer makes a purchase because the consumption amount is undetermined. The amount of the pre-authorized transaction will be frozen, and you will not be able to participate in other transactions until the pre-authorized settlement of the corresponding transaction occurs.

Credit card pre-authorization is a transaction in which the card issuer or its agency confirms the permission to freeze the amount before the special merchant debits the money. The pre-authorization will occupy the card's credit limit and will be canceled when the customer settles the pre-authorization. Extended information

Credit card pre-authorization is a new transaction method. In layman's terms, it is a form of advance payment, which can be understood as a "deposit". When a consumer uses a credit card to book a hotel or air ticket, the bank will first freeze a portion of the funds in the credit card as a "deposit" for the merchant's consumption. After the consumption is completed, the cardholder's signature is pre-authorization confirmation, and the merchant can officially deduct the money. This part of the funds.

However, if the consumer fails to confirm pre-authorization in time, the merchant can apply to UnionPay for pre-authorization completion, and then the bank can transfer the funds to the merchant's account.

Baidu Encyclopedia-Credit Card Pre-Authorization