Rules
Table of Contents
Classes
- UstgRules
- Mandatory invoice information according to the German VAT act: section 14 (4) and 14a UStG, section 33 UStDV for small amount invoices and section 34a UStDV for small business invoices.
- XRechnungRules
- Business rules of the CIUS XRechnung 3.0 (BR-DE-…), checked on the data model.
Enums
- BmfErrorClass
- Error classes of the BMF letter of 15 October 2025.