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Illustration showing the reasons a bank may terminate a merchant agreement

Merchant & POS

Under What Circumstances Is a Merchant Agreement Terminated?

Banks check merchants against a termination list before issuing a POS device. Learn the main reasons, such as counterfeit card acceptance, excessive chargebacks, and fraud, that can lead a bank to terminate a merchant agreement.

POS terminal used for card payment transactions

Merchant & POS

What is On-Us Leakage?

On-Us Leakage is a term used in the world of payment systems. On-us means the card-issuing bank and the POS-acquiring bank are the same. So what does on-us leakage mean in this context?

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.

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.

Merchant and bank settlement process for POS transactions

Merchant & POS

How do banks work with merchants?

After a merchant applies to a bank and the required checks on the company are completed, a POS is connected to the customer. Settlement can be commission-based, held for a period, or both, depending on the agreement.

Credit card being inserted into a merchant POS terminal

Credit Card

What Is the Transaction Life Cycle in the Card World?

As credit cards become more and more a part of our lives, we now make almost all our purchases without cash. We inserted our card into the merchant's POS. We made a 100 TRY sale transaction. We received a receipt confirming it was successful.

Illustration representing a bank checking a merchant against the termination list before issuing a POS device

Merchant & POS

What Is a Merchant Termination List Check?

The termination list is a list, fed by all banks, containing merchants whose merchant agreements have been terminated by banks, together with the reasons for termination. This list is maintained by BKM and offered to banks as a service. Merchants request…

Diagram of the Chargeback Document Management System (CDYS) process flow

Credit Card

What is the Chargeback Document Management System (CDYS)?

The Chargeback Document Management System (CDYS) is a system developed by BKM to resolve customer disputes over card payment transactions among BKM members, covering Copy Request, Chargeback, Representment, and related processes.

Diagram illustrating how the Termination Tracking System (FTS) works

Payment Systems

What Is FTS (Termination Tracking System)?

FTS (Termination Tracking System) lets banks check, before signing a merchant agreement, whether the applicant company or its representative has a negative history with any bank.