Glossary

What is XRechnung? — German e-invoice format

XRechnung is Germany's XML invoice standard for public-sector buyers based on EN 16931.

What is ZUGFeRD / Factur-X?

ZUGFeRD embeds structured invoice XML inside a human-readable PDF — also known as Factur-X in France.

What is a JWT (JSON Web Token)?

JWTs are compact signed tokens carrying claims — common for API auth and session cookies.

What is a Leitweg-ID?

Leitweg-ID routes e-invoices to the correct German public authority mailbox.

What is Factur-X?

Factur-X is the French name for the ZUGFeRD hybrid PDF+XML e-invoice standard.

What is Schematron validation?

Schematron applies business rules to XML invoices beyond XSD structure checks.