Understanding the Peppol Directory: Participant IDs, SML/SMP, and Access Points Explained (2025)

The Peppol Directory is a public register for discovering participants on Peppol and their document capabilities.
It is not mandatory for companies to appear in the Directory, as updates are done by SMP providers.
The Directory aids in human-readable discovery, while SML/SMP and Access Points handle technical discovery and routing.
Peppol Participant IDs are crucial for addressing and routing, ensuring uniqueness and interoperability.
The Directory provides a Business Card view of participants, showing name, country, and capabilities.

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.