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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 showing the CAT (Cardholder Activated Terminal) Indicator field used in payment authorization messages

Merchant & POS

What is the CAT (Cardholder Activated Terminal) Indicator?

CAT (Cardholder Activated Terminal) devices are typically unattended terminals that accept various payment cards. These terminals are frequently installed at railway ticket stations, gas stations, toll roads, parking lots, and other commercial locations.

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 of ISO 8583 Field 3 Processing Code structure

ISO 8583

ISO 8583 Field Descriptions (F3)

Field 3, Processing Code, is the field that shows what type of transaction is being performed and is critical for authorization. A Sale from POS differs from a Cash Withdrawal at an ATM.

Amazon PayCode cash payment option

E-commerce

What Is Amazon PayCode?

Amazon PayCode is a payment option that lets customers pay for Amazon orders in cash: after checkout they receive a code and pay at a participating Western Union agent location.

Illustration of ISO 8583 message format

ISO 8583

ISO 8583 Field Descriptions (F44)

DE 44 - ADDITIONAL RESPONSE DATA is used to provide other supplementary data that may be needed in authorization, as a response to the authorization message. The Card Authentication Results Code is sent in position 9, and the CAVV Result Code is sent in position 15.

POS terminal device used to process chip card payments

Merchant & POS

What is Application Usage Control (AUC)?

AUC (Application Usage Control) specifies restrictions that limit an application by geography or by specific transaction types. It is a 2-byte data element in Tag 9F07. If present, the terminal performs checks such as whether the transaction is at an ATM.

Cover of the Visa Merchant Data Standards Manual document

Merchant & POS

What Is the “Merchant Data Standards Manual”? How Can I Access It?

Visa's Merchant Data Standards Manual covers classification, identification and data standard requirements for merchants, payment facilitators and marketplaces, including merchant naming, location and MCC rules. Here is what it contains and where to find it.

TR Karekod national QR code logo for payments in Turkey

Merchant & POS

The Logo of Our National QR Code, TR Karekod, Has Been Announced

In the world of payment systems, there are new developments every day in both accepting payments and payment methods. QR code payments will undoubtedly become more common in the coming days, and we will make payments with QR codes in many places.