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Illustration of recurring payments and automatic card collection for subscription businesses

Merchant & POS

Key Points to Watch for in Recurring Payments

Winning customers is one of the most important things in business, but keeping them satisfied matters just as much. If you collect payments at regular intervals, such as monthly, these tips will help you improve the success rate of recurring collections.

Diagram of the chargeback process between cardholder, issuer and acquirer

Chargeback

How to Reduce Chargebacks (For Cardholders)

A chargeback is when a cardholder asks the issuing bank to refund a transaction made without their knowledge. It cannot be prevented entirely, but simple precautions can minimize the risk. Here is how the process works and what cardholders should do.

Illustration representing MCC codes used to classify merchants by category

Merchant & POS

What Is an MCC Code Used For?

Since the MCC code is a merchant's category code, it's critical for the checks performed during merchant onboarding and authorization, including campaigns and restrictions.

Illustration representing the products and services KKB offers directly to its member institutions

Credit Card

What Products and Services Does KKB Offer Directly to Members?

KKB was established, under banking law, to enable the exchange of all kinds of information and documents among at least five banks, and it also shares credit information about customers. The Credit Bureau of Turkey also serves deposit banks, participation banks, financial institutions, and more.

Diagram showing the structure of the ISO 8583 F54 Additional Amounts field

ISO 8583

ISO 8583 Field Descriptions (F54)

F54 - ADDITIONAL AMOUNTS is the additional amount field used in transactions. It can take different values depending on the transaction, such as carrying account balance information for balance inquiries.

Diagram explaining the MCC merchant category code field in ISO 8583 messages

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...

Illustration of ISO 8583 message format

ISO 8583

ISO 8583 Field Descriptions (F35)

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.

Diagram illustrating the Track 1 data structure and field layout on a magnetic stripe card

Credit Card

What is Track 1?

Track 1 is a special data set encoded on a card's magnetic stripe that contains the card information required for authorization when the card is used physically. It includes the cardholder name, card number, and expiration date.

Example of RRN printed on a POS receipt used to trace ISO 8583 transactions

ISO 8583

ISO 8583 Field Descriptions (F37)

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.

Diagram illustrating the structure of Track2 data on a card's magnetic stripe

Credit Card

What Is Track2?

A special data set printed on a card's magnetic stripe, containing the card information required for authorization when the card is used physically. It consists of 40 numeric characters. The Track2 field structure includes several data fields such as length and description.

Warning illustration about a fake social media gift points scam targeting card details

Credit Card

Congratulations, You Won Gift Points..

A real attempted card fraud story: a fake Facebook friend request, a promise of free bank points, and a request for card number, expiry date and CVV2. Here is what happened and how to protect yourself.