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Merchant & POS
These are codes placed into the terminal software by the acquirer that govern the rules for whether transactions go online or are declined, covering offline approval, offline decline, and online submission due to issuer risk...
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.
Payment Systems
Before describing the Onus Installment process, it is better to first answer: what is an Onus transaction? An Onus transaction is when the acquirer and issuer are the same institution, so the transaction is processed through that institution.
ISO 8583
F39 - RESPONSE CODE: This is the code showing whether the transaction was approved or declined. It is 2-digit alphanumeric. Typically 00 is sent when approved, and a decline reason code is sent when declined.
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
One of the most notable recent developments in card payments is that contactless limits are no longer fixed and can be managed dynamically per customer. Mastercard and Visa are taking different but complementary approaches, and ISO 8583 may need to evolve with them.
Chargeback
TRIP (Turkey's Communication Platform) is a central platform developed by BKM to fight fraud, bringing together Case Filing, Issuer and Acquirer Chargeback operations (Pre-Arbitration, Pre-Compliance, Arbitration, Compliance), and ATM deposit/payment dispute operations.
ISO 8583
F90 - ORIGINAL DATA ELEMENTS: the data elements from an original message, designed to identify the transaction in correction or reversal transactions. Subfields: Original MTI, Original DE 11 (STAN), Original DE 7, Original DE 32, Original DE 33.
Credit Card
The '12 - Invalid Transaction' error is usually returned when the issuer declines the transaction. It typically occurs when the same card is tried repeatedly at the same merchant for the same amount in quick succession.
Payment Systems
The rules in this guide relate to the processing of Transactions and Payment Transactions made with Mastercard-branded cards. Here are the key definitions and where to find the document.
Credit Card
BIN is short for Bank Identification Number: a unique, bank-specific number created under ISO/IEC 7812 standards that shows which bank a card belongs to. It is the first 6 digits of a card.
Online & Authorization
Electronic Commerce Indicator (ECI) is a 2-digit value generated by payment schemes (Visa, MasterCard, etc.) in 3D Secure transactions to determine the transaction's security level (Full 3D Secure, Half 3D Secure, Non 3D Secure), and it varies by payment scheme.