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"merchant numbers"

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Photo illustrating a point-of-sale multiple installment sale transaction

Merchant & POS

What is a Multiple Installment Sale?

This can occur at companies selling products from different sectors. For example, you enter a shopping mall and buy a refrigerator for 3000 TL, a dishwasher for 2000 TL, and an iron for 1000 TL, each under a different installment campaign.

Illustration representing an installment transaction made with a credit card

Credit Card

What is an Installment Transaction?

An installment transaction splits a payment into a set number of installments reflected on the cardholder's statement, when the card and POS bank are the same. For example, a 1000 TL transaction in 5 installments reflects 200 TL per statement period, starting from the first one.

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.

Diagram illustrating the early hold release process for merchants

Merchant & POS

What Is Early Hold Release?

Early Hold Release is a solution that allows merchants operating under a holdback arrangement to access their turnover held in the hold account when they need cash, before the holdback period ends. Merchants can work with banks under 3 different terms.

Illustration representing credit card fraud and online payment security risks

Fraud

What is Fraud? What are the Types of Fraud?

With the growth of credit and debit card usage and rising e-commerce transaction volumes, there has been a serious increase in exploiting user negligence to harm customers. Fraud means using someone else's card at a merchant or ATM to gain unjust profit.

Diagram illustrating the EMV Tag-Length-Value (TLV) data structure used in card transactions

Online & Authorization

What are EMV Tags?

In EMV, data is stored in Tag-Length-Value (TLV) format, and it is carried between the card, the POS terminal, and the authorization system in this same format. This post lists every EMV Tag, its type, and its description.