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Merchant & POS
The Personal Data Protection Law was adopted by the Grand National Assembly of Turkey on 24/03/2016 and published in Official Gazette No. 29677 on 07/04/2016. It protects individuals' rights in the processing of personal data and sets the rules that data controllers must follow.
Chargeback
Chargeback is inherent to card transactions, so it may be impossible to prevent entirely, but taking precautions keeps the risk to a minimum. Here are the key points merchants should pay attention to in order to reduce chargebacks.
Merchant & POS
GO Secure Payment is a system developed by BKM that verifies cardholders using a one-time password (OTP) during online purchases made with TROY cards, providing banks with a secure verification platform without needing to store card data.
Credit Card
CNP refers to a transaction made through a website or a company's own app payment page, where the card is not read by any device and its details are entered manually. It is short for Card Not Present.
Merchant & POS
Mail order is carried out by conveying credit card details to the merchant by phone or mail. A manual sale occurs when, due to a physical problem during checkout, the card details are entered into the POS device by hand instead.
ISO 8583
DE 13 — Date, Local Transaction: the date on which the transaction took place at the point of transaction (ATM, POS). It is 4 digits in MMDD format.
ISO 8583
F37 - RETRIEVAL REFERENCE NUMBER: a 12-digit alphanumeric value generated by the Acquirer that initiates the transaction. It must be printed on the POS receipt or ATM slip. RRN is the reference number that allows a transaction to be located.
ISO 8583
F41 - CARD ACCEPTOR TERMINAL IDENTIFICATION: the terminal where a transaction took place. An 8-character alphanumeric value generated by the acquirer bank and assigned to the POS, managed as a unique terminal number at the acquirer.
ISO 8583
F42 - CARD ACCEPTOR IDENTIFICATION CODE: the merchant number of the terminal where a transaction took place. It is a 15-character alphanumeric value. Transactions are settled to the merchant's account based on the merchant number in this field.
ISO 8583
DE 38 (AUTHORIZATION IDENTIFICATION RESPONSE) is the authorization code generated when a transaction is approved. It is alphanumeric, 6 characters long, and left empty for declined transactions.
ISO 8583
F23 - CARD SEQUENCE NUMBER: Information used to distinguish cards sharing the same card number. For example, the Card Sequence Number is incremented by 1 when a card is renewed. In an authorization transaction, if the F22 value is '05x'...
Merchant & POS
The answer depends on the type of POS terminal. A physical POS (GPRS, Dial-Up, IP, or cash-register POS) requires working with a bank. A virtual POS can also be obtained from a payment institution without a separate bank agreement.