How is it that the pos machine swipes the card successfully but doesn't issue the ticket?

Due to the failure of UnionPay system and payment company system, POS company delayed liquidation. POS company did not settle the payment in time. In this case, POS companies will generally inform merchants of the reasons and circumstances for the delay in liquidation in time. The customer changed the settlement card, but did not inform the bank or payment company.

POS machines can't brush receipts, which will generally trigger the bank's short message system but not enter the clearing system. As for the issuing bank, because the data has arrived at the issuing bank, the issuing bank will record this consumption, but the data will not be returned to the POS machine. So in fact, the deduction is unsuccessful.

The failure to sign the purchase order of POS machine is an unsuccessful transaction, and the cardholder's debit message cannot be used as the basis for the success of the transaction. Generally, first do a balance inquiry operation on the POS machine, that is, cancel the deduction of the issuing bank, and then brush the same amount.

Therefore, the POS card has not been issued yet, but the customer has received the deduction information, indicating that the transaction has not been successful.

Usually this situation is more common on the phone. The reason may be that the data transmitted by the telephone line is unstable. If this happens frequently, it is suggested that the business should report for repair as soon as possible and ask the telephone company to check.