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Table of credit card authorization response codes

Credit Card

What are Credit Card Status Codes in Authorization?

Cases where authorization approval is declined have always puzzled cardholders. Whenever the response code requires contacting the issuing bank (usually for declined transactions), the date, amount, and response code of the failed transaction become very important.

MasterCard Identity Check logo and authentication illustration

Security

What is MasterCard Identity Check?

Payment security is very important in payment systems. To increase security, transactions require additional information such as PINs and passwords. Remembering which information to use, and keeping it in mind without forgetting…

Diagram explaining the Visa Purchase Return Authorization process for card refunds

Credit Card

What Is Purchase Return Authorization?

A structure developed by Visa for purchase refund transactions. The purchase return authorization message lets cardholders view their refund transactions in real time, improving the customer refund experience.

Illustration of a 3D Secure payment verification screen

Merchant & POS

What is a 3D Secure transaction?

In e-commerce transactions, the system developed to increase transaction security for payments made with credit and debit cards is called 3D Secure. When paying with 3D Secure, a special payment screen provided by the banks appears on the user's screen.

Illustration explaining what a non-secure e-commerce card transaction is

Payment Systems

What is a Non-Secure transaction?

A non-secure transaction is an e-commerce transaction approved without any verification before authorization, such as SMS OTP. In short, authorization is obtained by verifying only the card number, expiration date, and CVV2.

Architecture of 3DS 1.0 compared with 3DS 2.0, showing the issuer, interoperability and acquirer domains

Security

What Is 3D Secure 2.0?

Before 3D Secure 2.0, let's explain what 3D Secure is. 3D Secure is a two-layer payment authentication system that protects both the cardholder and the merchant in online payments. First released by Visa in 1999, it was later adopted by other card schemes…

Secure card storage and tokenization illustration

Merchant & POS

What Is Card Storage?

Card storage is a system, secured with PCI DSS certification, for storing credit and debit card details safely. It saves consumers from entering their card details again and again on frequent purchases.

Illustration of online shopping with a credit card and a shopping cart on a laptop screen

E-commerce

What is Online Shopping?

Online shopping is a form of e-commerce in which consumers complete purchases over the internet using a credit card/debit card, bank transfer, or cash on delivery.

Pay by link payment on a mobile phone

Online & Authorization

What Is Pay by Link?

Pay by link is an innovative financial solution that completes a payment through a link sent over the internet, making it possible to shop and transfer money through channels like WhatsApp and Instagram.