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Credit Card
Due to how payment systems work, authorization is obtained for a transaction first. For a Not Onus transaction (different card and POS banks), the system waits for it to arrive via the clearing incoming file. If it does not arrive within about a week, the transaction expires.
Clearing
YTH stands for Yurtiçi Takas Hesaplaşma (Domestic Clearing and Settlement), the general name of the clearing system managed by BKM. In the clearing system, prefix values are held in fields F32, F93, F94 and F100.
Payment Systems
When we hear “payment systems”, card transactions at POS terminals or ATMs usually come to mind. Let's look together at the payment systems recognized by the Central Bank.
Credit Card
Due to how payment systems work, authorization is obtained first for a transaction. For a Not Onus transaction (where the card-issuing bank and the POS bank are different), the system waits for the relevant transaction to arrive via the clearing incoming file…
Credit Card
When the card-issuing bank and the POS bank are different, first obtaining authorization and then running the clearing process to finalize the transaction is called Dual Messaging. So why is a dual message structure needed?
Laws & Regulations
Law No. 7192 amends certain articles of Law No. 6493 on Payment and Securities Settlement Systems, Payment Services and Electronic Money Institutions. Announced on 22 November 2019, it entered into force on 01.01.2020.
Credit Card
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.
Agentic Commerce
Are We Ready to Give an AI Agent the Authority to Make Payments? Having long looked at complaint and dispute processes in payment systems, I think granting an agent payment authority is far different from research or product selection.
Payment Systems
After switching to response code 70 for contactless limit-exceeded cases, we found that some overseas POS devices and acquirers did not handle it as expected. This post covers why the problem lies in the ecosystem and how to address it.
Payment Institutions & E-Money
On 7 October 2023, the CBRT amended the Communiqué on Information Systems of Payment and E-Money Institutions and Data Sharing Services of Payment Service Providers, first published on 1 December 2021. Links to the new text, a comparison table and a detailed summary of changes follow.
Payment Systems
“What do contracts have to do with us? Let the legal department handle them,” you might say. But legal teams can't know every specialty, so business teams are expected to help with the clauses that affect their decisions.
Merchant & POS
A step-by-step walkthrough of a 100 TL POS sale: end-of-day batch close, clearing through BKM, interchange and merchant commission, and why the merchant gets paid even if the cardholder never pays the card bank.