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Credit Card
The '12 - Invalid Transaction' error is usually returned when the issuer declines the transaction. It typically occurs when the same card is tried repeatedly at the same merchant for the same amount in quick succession.
Merchant & POS
Winning customers is one of the most important things in business, but keeping them satisfied matters just as much. If you collect payments at regular intervals, such as monthly, these tips will help you improve the success rate of recurring collections.
Credit Card
From the outside, Visa contactless looks simple, but once the limit is exceeded and PIN comes into play it gets deeper. Why do response codes 65 and 70 behave so differently on POS devices in different countries, such as the Netherlands and Saudi Arabia?
Credit Card
With economic crises and the pandemic, the number of people struggling to pay has risen. Under the Turkish Civil Code, only the cardholder is responsible for their credit card debt, unless you are a guarantor or inheritance rules apply.
Courier & Delivery
Although some banks use web service integration, banks generally handle card distribution with couriers through file exchanges, with information sent within the service instead.
Security
With Chip&Pin technology, card PINs and chip-based transactions became widespread. As online shopping grew, strengthening the security of these transactions became a necessity, and OTP began providing that transaction security.
Merchant & POS
MPV stands for Merkezi POS Veritabanı (Central POS Database), BKM's shared database of all POS terminals operated by its card-accepting members, used for support, statistics, fraud analysis and the Common POS Management System.
Chargeback
A chargeback is the process of requesting that an amount paid by credit card be refunded, either because the goods or services paid for were not received, or because a transaction is identified as one the cardholder did not carry out.
Payment Systems
ISO 18245 is an ISO standard on the management of Merchant Category Codes (MCC) in retail financial services. ISO 18245: 2003 defines the code values used to classify merchants by the type of business, trade or service they provide.
Chargeback
A chargeback is the refund of an amount paid by credit card to the cardholder's card when the purchased goods or services were not received, or when a transaction was not actually carried out by the cardholder.
Online & Authorization
An APDU is an application-level protocol defined in ISO 7816-4 and used between a smart card and a POS, ATM, etc. There are two types of APDU: Command APDU and Response APDU. The structure of the APDU is given below.
ISO 8583
F60-ADVICE REASON CODE: Used to indicate the specific purpose of an advice/reversal message. It is 60 characters long.