If it is a consumption transaction on the same day, the transaction can be reversed through the "cancel" function of the POS machine, which is called reversal on the same day. This kind of transaction is not reflected in the bank's merchant statement. Basically it can be understood as not being done at all.

If the cardholder has not left, the cashier can cancel the consumption on the machine; if the cardholder has already left, or the next day, the relevant processing can only be carried out according to the return requirements. .

After the credit card POS machine is successfully swiped, if you want to cancel the transaction, you need to contact the merchant to obtain consent before canceling the order.

There is a cancel transaction option in the POS machine menu. You can cancel the payment after entering the password and the voucher number of the transaction receipt. The cancellation of the transaction can only be completed within 24 hours. The criminal suspect Li took advantage of the business hall's omission of not changing the initial password to carry out the attack.

There is a time difference problem with POS machines. Merchants can refund you when the money is credited to their accounts. Merchant: The customer requests a refund, checks the small order, and cancels the order. Wait for the money to be transferred to the account, and then refund the money to the customer. Please refer to the above customer content.

**, amount name, etc., should be stamped by the merchant and submitted to the maintainer. The merchant should fill in the "Special Merchant Account Adjustment Application Form". Finally, if the customer wants a refund, the merchant does not have to worry. , you can tell the customer that the bank and Lakala will contact the consumer in time and ask the consumer to wait until the POS machine successfully places the order.

This is the end of the introduction on how to turn off the POS machine function.