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"File Exchange"

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Workflow diagram of bank and courier file integration for card distribution

Courier & Delivery

How Is Bank Integration Done for Card Distribution via Courier?

Courier companies and banks generally carry out the card distribution process through file exchanges. (Some banks also use web service integration; in that case the information normally sent via file is transmitted within the service.) With the courier...

Diagram showing how an international card transaction is processed

Online & Authorization

How does the international transaction flow work?

When a card transaction is made abroad, banks usually calculate the cost from a percentage commission, a fixed commission, and an exchange rate margin. The flow starts when the customer requests a cash withdrawal at a foreign ATM.

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).

Diagram showing the PSE (Payment System Environment) directory used for application selection on an EMV chip card

Credit Card

What is PSE (Payment System Environment)?

PSE (Payment System Environment) is a directory on the card named 1PAY.SYS.DDF01 for a contact chip and 2PAY.SYS.DDF01 for a contactless chip. The Candidate List built via PSE is called indirect or implicit Application Selection.

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.

Diagram illustrating TCR (Transaction Record Component) packets used in payment clearing and settlement files

Payment Systems

What Is TCR (Transaction Record Component)?

TCR stands for Transaction Record Component, the packets that carry transaction information in a clearing system. Transaction types in a clearing file are distinguished by transaction code and usage code values, and this data is sent inside TCR packets.

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.

Illustration representing the chargeback and dispute process in card payments

Chargeback

What Are the Domestic Exceptions to Chargeback Rules?

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.

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.