ISO 8583:2023 defines a messaging interface for card-originated financial transactions between acquiring and issuing systems. It organises transaction-message structure and content, while network or processor implementation profiles determine the data and rules used in a service.
TL;DR:
- ISO 8583:2023 defines interchange-message structure for card-originated transactions.
- It supplies a common acquirer-to-issuer messaging interface.
- Message transport and settlement are explicitly outside its scope.
Summary
Card-message interface
ISO 8583:2023 specifies a common interface for exchanging financial-transaction-card-originated messages between acquirers and card issuers. Its focus is the information exchanged in card processing.
Structure and maintained definitions
The standard specifies message structure and format, including normalised data types. ISO’s public abstract assigns message, field and value definitions and supporting information to the ISO 8583 maintenance agency.
Transport and settlement exclusions
The document explicitly excludes how messages are transported and how settlement takes place. A system described as using ISO 8583 therefore still needs its transport, host and payment-network arrangements identified.
Edition and conformance
ISO lists edition 3, published in July 2023. Implementation requires the applicable maintained definitions and processing profile. The standard’s identity alone does not determine issuer approval, merchant pricing, dispute rights or conformance of a particular host connection.
Keywords
- ISO 8583
- Card Messages
- Acquirers
- Issuers
- Interchange
- Message Structure
- Data Types
- Field Definitions
- Maintenance Agency
- Host Profiles