Search
241 articles found
ISO 8583
F47-ADDITIONAL DATA (NATIONAL) is the field reserved for domestic additional information. In Turkey, it carries the BKM Unique ID in authorization transactions and data specific to KKPT (card-to-card transfer) transactions.
ISO 8583
F45 (TRACK-1 DAT) carries the Track 1 data of the card in ISO 7813 format, including field separators and start and end sentinels but excluding the LRC character. It is 76 characters long.
Credit Card
DCI (Debit/Credit Indicator) is a flag that shows whether a transaction was made with a credit card or a debit card. With the arrival of prepaid cards, it began to be used as DCPI (Debit/Credit/Prepaid Indicator). Is DCI sent in the authorization message?
ISO 8583
F35 TRACK-2 DATA: The values printed to the card's Track 2 data in ISO 7813 format, including field separators and start/end sentinels, but excluding LRC (Longitudinal Redundancy Check) characters. It is 37 characters long.
Payment Systems
Here are the Mastercard and Visa chargeback reason codes that require a cardholder letter and/or supporting documentation, with their descriptions.
Payment Institutions & E-Money
A prepaid card usable only at goods and service providers inside a single holiday village is considered to be used within a limited network and outside the scope of the Law, provided certain conditions are met.
Credit Card
Although debit cards and credit cards look similar in appearance, there are fundamental differences between them, from cash advances to installments and security.
E-commerce
BKM Express has pioneered card storage and digital wallets in Turkey. After the Competition Authority's termination decision, a Board decision revoked it, so BKM Express will continue. Here is the latest situation.
Credit Card
Most of us are familiar with CVV2/CVC2 - the security code on the back of a card, usually three digits. So what is dCVV2? Here's how dynamic CVV technology works and why Visa introduced it for online payments.
Laws & Regulations
In Türkiye, banks within the scope of Banking Law No. 5411 and electronic money institutions licensed under Law No. 6493 can issue electronic money.
ATM
Did you know that when a transaction is attempted with another bank's card at an ATM, the PIN check happens not when the card is inserted, but when the transaction is sent for authorization? (Deposits are the exception.)
Online & Authorization
When a card transaction is made abroad, banks usually calculate the cost from a percentage commission, a fixed commission, and an exchange rate margin. The flow starts when the customer requests a cash withdrawal at a foreign ATM.