Validator-configuration-xrechnung

Judgement

What it is

Building block

What it does

The official rule set of schemas and Schematron for validating UBL and CII invoices against EN 16931 and XRechnung with the KoSIT validator.

Adopt it when

You build or test software that sends or receives German e-invoices and need the reference validation rules.

Watch out

Needs the separate KoSIT validator to run, and you must track releases as XRechnung versions change.

Ready for

Production-ready

Runs as

Library

Built with

XSLT and Schematron

How established

Established: started 8 years ago, latest release v2026-08-31.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Validator-configuration-xrechnung → runs on a microchip

How compilers were built, back to punched paper tape

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