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Credit Card
KKB was established, under banking law, to enable the exchange of all kinds of information and documents among at least five banks, and it also shares credit information about customers. The Credit Bureau of Turkey also serves deposit banks, participation banks, financial institutions, and more.
Payment Systems
In payment or cash withdrawal transactions, the TR QR Code is generated by the POS or ATM. The card issuing bank must build its systems to read and act on this code. Errors usually stem from mishandling the long and short QR code flows, which are explained here.
Merchant & POS
When POS devices given to merchants are replaced or taken back, they must be returned in working order. A device that cannot be repaired, or only at high cost, is classified as a scrap POS.
Security
Access Security Control (ACS) is the security protocol that the card-issuing bank must maintain in 3-D Secure to support cardholder authentication, functioning as a complete authentication solution for issuers and payment processors.
Merchant & POS
Let's first look at chargeback and refund: a chargeback returns the amount paid to a credit card when goods or services are not received, or when transactions not made by the cardholder are detected.
Merchant & POS
Cash on delivery means paying for an online order at the moment of delivery, usually in cash, though some e-commerce sites also accept card payment at the door. It boosts sales and builds trust, but carries risks like missing POS terminals and refused deliveries.
From My Readers
A reader asked why ATMs can't warn customers that a not-on-us withdrawal is using their overdraft. The short answer: BKM currently works only with the available limit, and banks include the overdraft in it.
Merchant & POS
Response codes returned on payment transactions are critical for managing next steps. Curious which error codes trigger card capture? Under ISO 8583, codes 04, 07, 33, 34, 36, 38, 41 and 43 all result in the card being captured.
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.
Credit Card
Credit cards and POS are two core products banks offer customers. At first glance, credit cards seem to generate no return beyond interchange fees, card fees, and late fees.
Merchant & POS
Credit card transactions made via POS sometimes need to be reversed. These are called a cancellation (void) or a refund. What's the difference, and when does each apply?
Online & Authorization
A reference guide to authorization response codes seen on POS and ATM transactions, with plain-language explanations of what each code means and what to do about it.