ISO 20022 Business Application Header (BAH) – A Complete, Structured, and Practical Guide
The Business Application Header (BAH) is a foundational concept in ISO 20022 messaging.It plays a crucial role in routing, identifying, securing, and contextualizing business messages—no matter which network transports them. What is the Business Application Header (BAH)? In short: BAH = “header metadata” for ISO 20022 messages; ISO business payload = “the actual business data”. […]

