What is a reverse transaction?

Rob is a remedy that the system thinks the transaction may fail.

That is, a transaction has been marked as successful at the terminal, but the accounting transaction package sent to the host has not received a response, that is, the terminal transaction has timed out, so it is uncertain whether the transaction has been successfully completed at the host. In order to ensure the interests of users, the terminal sends a request to the host again, requesting to cancel the transaction process.

If the host has successfully traded, the transaction will be rolled back, otherwise it will not be processed, and then the processing result will be returned to the terminal.

The automatic reversal mechanism can only be used when one party's bookkeeping is overtime, and the bank can't determine its bookkeeping result, so it is possible to use unilateral bookkeeping. There are two main types of automatic straightening: real-time automatic straightening and batch automatic straightening.

Extended data:

Handling of "transaction reversal" in POS transaction;

Merchants often encounter the situation that the POS machine does not print out the receipt after swiping the card, but the cardholder's mobile phone receives the bank debit reminder message. In this case, merchants should not panic, do not panic, and use UnionPay cards casually at the first time.

1. Make an inquiry or consumer transaction on the POS machine (if any amount is 0, the POS machine will prompt "automatic reversal is successful", and the cardholder will also receive a bank prompt message that the deduction has been returned to the account.

2. Let the merchant pay the bill immediately, and the consumer's money will return to his card immediately.

This happens mostly in telephone POS machines, because the data transmitted by telephone lines is unstable. If this happens frequently, it is recommended that businesses report to the telephone company for repair and check the lines.

Baidu Encyclopedia-Chongzheng

Baidu Encyclopedia-Reverse Trading