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Payment Institutions & E-Money
The Central Bank (CBRT) approved the Crowdfunding System Activity of the Central Registry Agency (MKK) as one of its other activities. Here is the Official Gazette decision and what Article 17 of the regulation says.
ISO 8583
F18-MERCHANT TYPE: This is the merchant's category code (MCC) information. It must contain values from the Mastercard or Visa MCC Code list. It is a 4-digit numeric value. For ATM transactions, MCC code 6011 should be sent. The role of MCC in authorization...
Payment Systems
Message 200 is generated for transactions initiated from POS applications, and the acquiring bank responds with message 210. Learn how 100/110 messages route approvals via the issuing bank, and common rejection reasons.
Agentic Commerce
The next customer on the internet may not be human. If AI agents become part of purchasing decisions, the rules of e-commerce, marketing, and payment systems could change.
Merchant & POS
PIN Transaction Security (PTS) verifies that card data and PIN information are used for a payment transaction. It is a set of modular evaluation requirements managed by the PCI Security Standards Council for PIN-accepting terminals.
ISO 8583
F39 - RESPONSE CODE: This is the code showing whether the transaction was approved or declined. It is 2-digit alphanumeric. Typically 00 is sent when approved, and a decline reason code is sent when declined.
Merchant & POS
A POS is a functional device with its own dedicated software, customized to the authorization system of the bank it is connected to, that accepts credit or debit cards. The POS and the authorization system communicate using the ISO 8583 standard.
Chargeback
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.
Credit Card
The name for a list of problematic cards — lost, stolen, expired, over-limit, counterfeit, or otherwise flagged — published by card companies like Visa and MasterCard. Mastercard calls it the 'MasterCard Warning Notice'.
Payment Institutions & E-Money
The BRSA is the Banking Regulation and Supervision Agency, an autonomous agency that protects savers' rights, ensures banks operate soundly and securely, and contributes to the long-term growth and stability of Turkey's economy.
Merchant & POS
With advances in technology, mobile phones can now be used for many functions besides calls and internet access. One such innovation is the ability to use smartphones or tablets as POS devices.
Payment Systems
Digitalization keeps changing the speed and shape of payments. AI-based payment agents pay on their own within user-defined limits and rules, completing transactions without the user initiating any action. This post explains how they work and what to watch for.