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Diagram illustrating the types of chargeback disputes in card payments

Chargeback

What are the chargeback dispute types?

A chargeback is a dispute raised against a card transaction when the cardholder did not make it or does not recall it. The dispute types vary depending on the situation; let's look at them.

Flowchart showing the chargeback dispute process between cardholder, issuer, and merchant

Chargeback

What is a chargeback?

A chargeback is the process of refunding an amount back to a credit card when goods or services paid for are not received, or when transactions not carried out by the cardholder are identified. It is translated into Turkish as reverse presentment.

News clipping about the arrest of hacker Hakan Karacaoglu

Fraud

Famous Hacker Caught After 8 Years

Recently the following news story appeared in the papers. Two things stood out: the hacker was a former banker, and the device he used to clone cards. In banking fraud, insiders who know the system's weak points can build schemes customers never notice.

American Express chargeback reason codes list from the Chargeback and Exception Processing Guide

Chargeback

What Are the American Express Chargeback Reason Codes?

Chargeback reason codes vary by card scheme. The Amex chargeback reason codes and their descriptions are listed below: American Express Chargeback Reason Codes A01 The charge you submitted did not receive a valid authorization approval code for the amount...

POS payment terminal illustration

Credit Card

What is Dual Messaging?

When the card-issuing bank and the POS bank are different, first obtaining authorization and then running the clearing process to finalize the transaction is called Dual Messaging. So why is a dual message structure needed?

Diagram illustrating card fraud and forgery in card payments

Security

What Is Forgery in Card Payments?

Forgery in card payments means transactions made with card details without the cardholder's knowledge, or purchases with counterfeit or stolen cards. Merchants cannot eliminate fraud and chargeback risk, but they should aim to reduce it to reasonable levels.

Merchant category code (MCC) and POS agreement illustration

Merchant & POS

What Should a Merchant Do When It Changes Its Line of Business?

When signing a merchant agreement, merchants declare their line of business, which banks record as an MCC (Merchant Category Code). A merchant may only sell products or services within the line of business declared to its bank.

Illustration representing the products and services KKB offers directly to its member institutions

Credit Card

What Products and Services Does KKB Offer Directly to Members?

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.

Diagram illustrating the card payment arbitration process

Chargeback

What is Arbitration?

Arbitration, by definition, is a dispute resolution method in which disputes are settled by arbitrators the parties choose themselves, rather than by official courts. In payment systems, it follows a chargeback when the issuer and acquirer cannot agree.

Illustration showing a margin added to a foreign currency exchange rate

Merchant & POS

What Is a Marked-Up Exchange Rate?

In payment systems, exchange rate information is used in two places: POS devices that support foreign currency transactions, and credit card transactions made in a foreign currency (usually abroad).