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Merchant & POS
Response codes returned on payment transactions are critical for managing next steps. Curious which error codes trigger card capture? Under ISO 8583, codes 04, 07, 33, 34, 36, 38, 41 and 43 all result in the card being captured.
Payment Systems
Every payment transaction completes in seconds, yet dozens of controls run behind the scenes. This post covers the precautions for authorization and clearing, the critical role of reversals, and the financial loss scenarios most often seen in the field.
Payment Systems
The Draft Retrieval Not Required Before Chargeback codes defined for Visa and Mastercard are listed below, so you can see which disputes can go straight to chargeback.
Online & Authorization
These are codes that communicate the issuer's conditions for approving a transaction online (IAC-Online), for declining it (IAC-Denial), or for declining it when the terminal cannot go online (IAC-Default).
Credit Card
The Card Security Code is a 3-digit numeric value used for cardholder verification and to reduce fraud risk. It is generated during card production and printed either on the card or encoded into the Track 1 and Track 2 data.
Contactless
A TR Karekod transaction is a payment carried out using a QR code generated according to the procedures and principles in the regulation on the generation and use of the TR Karekod in payment services.
Laws & Regulations
The Regulation on the Generation and Use of TR QR Code in Payment Systems sets the standards for QR codes in payment services. The Central Bank has taken the first step by drafting rules for a common QR code structure.
Merchant & POS
AUC (Application Usage Control) specifies restrictions that limit an application by geography or by specific transaction types. It is a 2-byte data element in Tag 9F07. If present, the terminal performs checks such as whether the transaction is at an ATM.
From My Readers
I occasionally receive questions from my readers, and I answer them by email or through other channels. Since others may have similar questions, I will publish these questions on my site along with the answers. Hello Mr. Arif, I read your articles from time to time and...
Merchant & POS
The regulation on generating and using TR QR Code in payment services was published in the Official Gazette No. 31220 on August 21, 2020. Its purpose is to set the standards for generating and using TR QR Code in payment services.
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...
ISO 8583
F55 - INTEGRATED CIRCUIT CARD (ICC) SYSTEM RELATED DATA: the field where EMV data is written on chip cards. It consists of components such as Position, Private Data Subelements, PDS Tag, PDS Length, and PDS Value...