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Merchant & POS
Code 10 is when a merchant suspects the cardholder or the card is counterfeit and calls the card's bank, which then verifies the transaction with the merchant's bank. If staff suspect a card or cardholder, they should call the bank immediately.
Merchant & POS
Partial authorization lets an issuer approve part of the requested amount when the card lacks the full balance, with the rest paid another way. This post covers the technical, receipt, clearing, reconciliation, merchant and certification requirements for acquirers.
Merchant & POS
Partial Authorization lets an issuer approve part of a transaction instead of declining it when the balance or limit is insufficient. This post covers how it works in ISO 8583, whether it is mandatory, and why it matters for the business.
FAST
Current information: this post describes the limit as it stood when published. The CBRT's press release No. 2022-13 of 14 February 2022 announced a higher FAST limit and FAST payments in shopping through TR QR Code.
Online & Authorization
In payment systems, the result of a transaction is sent in the F39 field. The F39 value is the code indicating the transaction's approval or decline status. It is a 2-character alphanumeric code. When approved, the value is usually 00.
ATM
Due to inflation and other financial conditions, banks in Türkiye raised their ATM cash withdrawal limits as of 1 January 2025, from 10,000 TL to 15,000 TL and, at some banks, up to 20,000 TL.
Merchant & POS
In daily credit card purchases, the POS produces two receipts: the Customer Copy and the Merchant Copy. The cardholder gets the customer copy; the merchant keeps its own copy by law.
Online & Authorization
Below are the EFT codes of banks located within Turkey, which are used both during the payment systems authorization stage (Field 32) and in banking transactions.
Payment Systems
ISO 18245 is an ISO standard on the management of Merchant Category Codes (MCC) in retail financial services. ISO 18245: 2003 defines the code values used to classify merchants by the type of business, trade or service they provide.
ISO 8583
We covered the ISO 8583 basics in an earlier article. This post explains the ISO 8583 message structure in detail: every ISO 8583 message consists of three main parts - the MTI (Message Type Indicator), the Bitmap, and the Data Elements.
ATM
With the advancement of technology, cash withdrawal methods have also diversified. The latest trend is withdrawing cash with a QR code. By generating a QR code through the mobile branch app of a bank that supports this feature, customers can withdraw cash from an ATM without a card.
ISO 8583
F90 - ORIGINAL DATA ELEMENTS: the data elements from an original message, designed to identify the transaction in correction or reversal transactions. Subfields: Original MTI, Original DE 11 (STAN), Original DE 7, Original DE 32, Original DE 33.