Credit Card
What Is SAFE (System to Avoid Fraud Effectively)?
SAFE, short for System to Avoid Fraud Effectively, refers to fraud records created by issuing banks. Fraud records sent in the Mastercard clearing format fall under the SAFE category.
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"card issuing"
302 articles found
Chargeback
What Is a Soft Chargeback?
A soft chargeback, also called a retrieval request, is a request for documents about a transaction the cardholder does not recognize. Learn why customers request them, what information merchants should provide, and why a fast response matters.
Merchant & POS
What is CAVV? What is AAV?
CAVV and AAV are verification codes used in 3D Secure transactions to ensure transaction integrity and security. CAVV is used by Visa, while AAV is used by Mastercard.
Payment Systems
Why Am I Getting an Error When I Try to Pay with a TR QR Code?
In payment or cash withdrawal transactions, the TR QR Code is generated by the POS or ATM. The card issuing bank must build its systems to read and act on this code. Errors usually stem from mishandling the long and short QR code flows, which are explained here.
Online & Authorization
ISO 8583 Field Descriptions (F53)
F53 - PIN Encryption Control Information. When online PIN data is present, sending the F53 value is mandatory, except when DUKPT information is carried in Field 63, Tag 01. F53 consists of the following components.
Payment Systems
BKM (Card Payments) TR Karekod Technical Principles and Rules Guide V1.1 Published
The Central Bank has published a guide setting out the detailed technical principles and rules for using TR Karekod in card payment transactions, based on the TR Karekod Regulation and the TR Karekod Principles and Rules.
Fraud
Do Cardholders Have the Right to Dispute Transactions Made Without Their Knowledge?
Yes. Cardholders have the right to dispute transactions made with their cards without their knowledge. Here is how the process, known as a chargeback, works.
Payment Systems
Where Does the Mill's Water Come From? How Banks Really Earn from Credit Card Campaigns
How do banks fund so many points, bonuses, and discounts? This post explains the credit card profitability model: merchant commissions, interchange, interest income, installments, and why campaigns are an investment in transaction volume rather than a cost.
Credit Card
How Should the Relationship Between Credit Card Count and POS Be Interpreted for Banks?
Credit cards and POS are two core products banks offer customers. At first glance, credit cards seem to generate no return beyond interchange fees, card fees, and late fees.
Credit Card
If I close my credit card, are the transactions made on it deleted?
A credit card is a payment instrument that lets a customer borrow up to a limit set by the bank after evaluating certain criteria. Transactions made on the card are first recorded in the current-period transactions, then posted as debt on the statement date.
Credit Card
Issuer Script Results
Issuer Script Results is the field that shows the results of the Issuer Script commands sent to the card. This post explains its byte and bit values, what an issuer script is, why the results matter, and what happens when a command fails.
Payment System Institutions
What Is the BKM API?
Thanks to the API developed by BKM, BKM Express member merchants can automatically update the BIN lists of cards issued by all banks in Türkiye and offer installments and reward points more efficiently.