In modern society, swiping cards have become very popular, and the application of POS machines has become very common. It has become one of the common items in our daily life, but there are still many friends who are very vague about the basic concepts of pos machines. Specially organized some basic knowledge about POS machines, hoping to familiarize and understand this knowledge, so that you can use POS machines more confidently and conveniently in your daily life.
What is the MCC code?
MCC is a shorthand for Merchant CategoryCode, and the Chinese name is the merchant industry code. There are tens of millions of merchants in the country. When UnionPay sends POS to merchants, it will set up a merchant number. This number is very particular, usually 15 digits, by agency code (3 digits) + area code (4 digits) ) + merchant type MCC code (4 digits) + merchant sequence number (4 digits), and the MCC code is an important part of this merchant number.
What is one machine and one yard?
After the cardholder successfully prints the card on the merchant's POS machine, the ticket will be printed out. There is a merchant number on it. From the 8th to the 11th (4 digits), the MCC code of the POS machine of the merchant is corresponding to this code. It is the industry that the business operates.
Can the name of the merchant be taken at will?
It is not allowed to start at random. According to the requirements of the "Business Guide for the Completion of Business Names" in the transaction message specified by UnionPay, the name of the business is composed of administrative divisions, font size, industry and organization.
What is the machine to join the network?
The source of the POS terminal generally has two places, or a custom machine provided by the payment company. The POS program belonging to the brand has been installed in the POS machine, or the bare machine sold by the POS terminal manufacturer is provided by the downstream channel. Negotiate the purchase price, and install the POS program provided by the payment company that belongs to the model, and need to enter the equipment number of these self-contained bare metal into the payment company's system database.
What is an electronic signature?
Electronic signature is a more secure and efficient new signature method that can replace traditional paper signatures. Using the electronic signature, you only need to sign on the touch screen after the transaction is completed. After the signature is completed, the POS will automatically send the signature to the system. After the delivery is completed, you can choose whether to print the paper ticket, and print the small ticket. The printed cardholder’s electronic signature is on the ticket.
What is the SN code?
The product serial number of the POS machine manufacturer for each terminal is generally called the SN number, which is generally printed on the back of the POS machine. The purchaser needs to enter the SN number in the system, and the POS machine can connect with the system background.
What is t+1/t+0/, d+1/d+0?
T+1 is the second business day to arrive;
t+0 is the day of the business day;
D+1 is the next day (including rest days, holidays);
d+0 is the day of the year (including holidays, holidays).
What is the limit?
POS machine quotas are common to merchants that settle accounts with private accounts, such as single transaction limits, or single card transaction limits, or daily arrival limits, etc., which impose different limit requirements based on different risk control policies of the acquirer to reduce illegal transactions. risk.
What is the withdrawal fee?
The normal situation of the merchant's transaction at the merchant's POS machine is the next day, that is, t+1 is received, and the merchant needs to arrive at the account on the same day, that is, t+0 or d+0 to the account service, that is, the application needs to be withdrawn. Because the cash withdrawn is funded by others, a certain percentage of the withdrawal fee is required.
Why are some POS not checking the balance function?
In order to prevent malicious testing of bank card password behavior, some acquirers have closed the bank card balance inquiry function.
What is a downgrade transaction?
The downgrade transaction refers to the downgrade reading of the magnetic stripe when the bank card chip data cannot be read, but now the bank gradually closes the downgrade transaction. When the POS is operated, the plugging and brushing sometimes causes the POS to promptly reject the downgrade transaction.
What is the bank number?
The Lianhang No. is the only identification mark of a regional bank. It is used for the large-value payment system, the micro-payment system, the city commercial bank draft system, and the national check image system organized by the People’s Bank of China (including the city’s same-city automatic clearing system). ) Inter-regional payment settlement services. It consists of 12 digits: 3 bank code + 4 digit city code + 4 bank number +1 digit check digit.
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