ARN Definition.
Acquirer Reference Number: a 23-digit reference that the acquirer assigns when a card transaction is cleared. It lets the transaction be traced end to end through the scheme’s and the issuer’s systems. It is the standard proof that a refund was issued when a customer says they never received it.
See also
Where this term appears
GuideThe four-party modelGuideThe role of banksGuideMerchant, acquirer, PSPGuidePayment schemesGuidePayment regulationGuideCentral banks and payment infrastructuresGuideAgents, distributors, and banking-as-a-service: who is liable for whatGuidePayments in GermanyGuidePayments in AustriaGuidePayments in the BalkansGuidePayments in the Baltics and FinlandGuidePayments in the Netherlands and Belgium