ISO 8583 Financial transaction card originated messages — Interchange message specifications is the International Organization for Standardization standard for systems that exchange electronic transactions made by cardholders using payment cards. It has three parts:
- Part 1: Messages, data elements and code values
- Part 2: Application and registration procedures for Institution Identification Codes (IIC)
- Part 3: Maintenance procedures for messages, data elements and code values
Read more about ISO 8583: Introduction, Message Type Indicator, Bitmaps, Data Elements