Payments Glossary
A complete reference of payments terms from participant types to transaction processes.
Payment Orchestration
Payment orchestration routes transactions across multiple acquirers in real time to optimise approval rates and cost.
Retrieval Request
A retrieval request is a pre-chargeback documentation request from a card issuer that merchants must respond to within scheme deadlines.
SCA Exemptions
SCA exemptions allow qualifying low-risk transactions to skip Strong Customer Authentication under PSD2.
EMV
EMV is the chip card standard that uses cryptographic authentication to prevent counterfeit card fraud and defines liability shift rules at point of sale.
Decline Code
A decline code is the response code returned when an authorisation request is not approved, indicating the reason category.
Fraud Score
A fraud score is a real-time risk rating assigned to payment transactions to determine approval, review, or decline decisions.
Acquirer Reference Number
An Acquirer Reference Number (ARN) is a unique 23-digit transaction identifier used to trace card payments for dispute resolution and refund tracking.
Block List
A payment block list automatically declines transactions from identifiers associated with fraud or policy violations.
Multi-Acquirer Setup
A multi-acquirer setup routes transactions across multiple acquiring banks to improve approval rates, reduce costs, and add resilience.