RRN Definition.

Retrieval Reference Number: a 12-character reference (field 37 in ISO 8583 messages) assigned to a transaction at authorization, which follows it through to settlement. It is the most widely used reconciliation key between merchant, acquirer, and issuer systems. It is printed on terminal receipts and appears in most back-office systems.

See also

→ ARN→ STAN→ ISO 8583

Where this term appears

GuideThe four-party modelGuideReconciliation and reporting around the worldGuideAuthorizationGuideCard payment codes and identifiersCourseUPI in depth: integration and operations

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