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"Transaction Code"

217 articles found

Example of a QR code (karekod) pattern

Merchant & POS

What is a static QR code?

A static QR code is a code whose content is fixed and can be used for multiple payment transactions. So what is the difference between a static and a dynamic QR code?

POS terminal used for a card payment transaction

Merchant & POS

What Is a Timeout in Payment Systems?

In the world of payment systems, both the issuer (the cardholder's bank) and the acquirer (the POS/ATM bank) must follow certain rules for card transactions made through a POS terminal or an ATM. Responding to transactions within a certain time is one of these rules.

Illustration of a 3D Secure payment verification screen

Merchant & POS

What is a 3D Secure transaction?

In e-commerce transactions, the system developed to increase transaction security for payments made with credit and debit cards is called 3D Secure. When paying with 3D Secure, a special payment screen provided by the banks appears on the user's screen.

EMV chip card illustration

Online & Authorization

What is EMV?

EMV stands for Europay, Mastercard and Visa. In 1994 these companies formed a working group to set chip-card standards, leading to the EMV standards used worldwide today.

Virtual POS payment system diagram for online card transactions

Merchant & POS

What Is Virtual POS?

Virtual POS is the software-based, security-enhanced equivalent of the physical POS devices used for card payments at merchants, designed for online shopping. It is not issued to individual customers, only to sole proprietorships, companies, or foundations and associations.

OTP SMS service icon illustrating one-time password delivery

Security

What Is OTP? What Is Its Role in End-to-End Security?

With Chip&Pin technology, card PINs and chip-based transactions became widespread. As online shopping grew, strengthening the security of these transactions became a necessity, and OTP began providing that transaction security.

Diagram showing how a Message Encryption Key (MEK) is used to encrypt and transmit a message

Merchant & POS

What Is Message Encryption Key (MEK)?

MEK stands for Message Encryption Key, a randomly generated or static key used to encrypt message content and ensure its secure transmission between parties.

Discover chargeback reason codes list

Payment Systems

What Are the Discover Chargeback Reason Codes?

Chargeback reason codes differ by card scheme. Here is the list of Discover chargeback reason codes and their descriptions, along with how merchants can use them.

Diagram illustrating ISO 8583 Field 61 Point of Service (POS) data structure

ISO 8583

ISO 8583 Field Descriptions (F61)

F61 - POINT OF SERVICE (POS) DATA: This field provides information about the specific status of the POS at the time of the transaction. Position Usage Attribute 1 POS Terminal Attendance Indicator 0 = Attended terminal (Valid for MasterCard debit card and Maestro transactions only).

Illustration representing QR code payment routing in Turkey

Payment Systems

What are the QR Code Routing System (KYS) Rules?

The purpose of these rules is to set out the operating rules, participation requirements, and pricing principles of the QR Code Routing System (KYS) established and operated by BKM, as well as other procedures related to KYS's operation.

Payment terminal screen displaying the Application Label of a card

Credit Card

What Is Application Label?

A mandatory alphanumeric field, 1-16 characters, sent in tag 50 of EMV transactions, representing a name related to the card application's AID in the ADF.