Payment Systems
What is BKM (Interbank Card Center)?
BKM, short for Interbank Card Center, is a legal entity established in 1990 with contributions from 13 public and private Turkish banks to provide clearing and settlement for cards.
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"Fraud"
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Credit Card
Which Cards Can I Use for Mail Order Transactions?
Debit cards and prepaid cards are generally closed to mail order transactions. Mail order authorization is held on credit cards. Unless specifically requested at application, a card is issued closed to mail order transactions.
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).
ISO 8583
ISO 8583 Field Descriptions (F12)
DE 12-TIME, LOCAL TRANSACTION: the local time at which the transaction took place at the point of transaction (ATM, POS). 6 digits, hhmmss format. F12 differs from F7 (Transmission Date and Time).
ISO 8583
ISO 8583 Field Descriptions (F18)
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...
ISO 8583
ISO 8583 Field Descriptions (F19)
F19 — Acquiring Institution Country Code: the country to which the location of the acquiring bank's device (ATM, POS, etc.) belongs.
ISO 8583
ISO 8583 Field Descriptions (F35)
The card's Track 2 data is carried in this field. Track 2 data contains information such as the card number, expiry date and service code.
Credit Card
I can't use my card for e-commerce transactions. What could be the reason?
If you can't use your card for e-commerce transactions abroad, first check that e-commerce authorization is enabled, that 3D Secure has been set up, and that your bank's authorization system is active. The issue may also originate from the merchant's bank.
Merchant & POS
What Is a Fallback Transaction?
When a chip can't be read due to a chip fault or the card being inserted incorrectly, the transaction is completed by swiping the magnetic stripe on the right side of the POS. Can chipless cards do fallback?
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.