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Merchant & POS
When a transaction is made through a POS, it is recorded both on the POS itself and in the acquiring bank's authorization system. At batch close, the POS sends all its transactions to the bank, which reconciles them against its own records.
Chargeback
The Dispute Management System (HİYS) is the system used among BKM members to share chargeback transactions and the supporting documents that must accompany them, linked to Domestic Clearing and Settlement System data.
Laws & Regulations
The purpose of the Regulation on Bank Cards and Credit Cards is to set the procedures and principles for issuing and using bank and credit cards and for the activities of institutions in the card payment system.
Merchant & POS
The batch number is kept on the POS, incremented by 1 at each end of day, used to transfer transactions to the merchant account and for reconciliation. It's tracked on both the POS and the bank's system.
EMV
The Application Unblock command removes the block placed on an application by the Application Block command, making the application usable again. Like Application Block, it is a command sequence managed after the card is presented to the terminal.
Merchant & POS
The term 'provizyon' comes from French and means obtaining approval for a transaction. In payment systems, authorization confirms that the card, POS, bank account, and transaction limits are sufficient to complete a payment.
HSM & Security
The CPoC standard, issued by the PCI Security Standards Council in 2019, is a data security standard that lets merchants accept contactless payments using a commercial off-the-shelf (COTS) mobile device with NFC.
FAST
The Central Bank of the Republic of Turkey (CBRT) has implemented a significant limit increase in the FAST system. Under the regulation effective August 26, 2026, the FAST money transfer limit was raised from TRY 100,000 to TRY 300,000. The same increase also applies to Request to Pay...
Merchant & POS
Contains the terminal-resident data objects (tags and lengths) that the ICC needs when processing the GET PROCESSING OPTIONS command. In short, it is the list of information the card requests from the terminal before starting the transaction.
HCE
Tokenization and digitization are two important terms in mobile payments that are easily confused and often used interchangeably. What is the difference between digitization and tokenization?
Credit Card
For a person over 18 with the capacity to discern, getting or using a credit card can only be prevented if they are placed under legal restriction by a court decision. A court-appointed guardian can then ask banks to cancel their cards.
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...