e-Invoice API
YannickAn API service for generating legally valid e-invoices from invoice data.
Work project
The code was written for my work and is therefore private.
It supports the main European invoice standards:
- XRechnung 3.0 XML in both official syntaxes (UBL and CII)
- ZUGFeRD 2.x / Factur-X PDF containers with the machine-readable data embedded
Every generated document is validated against the official KoSIT rules before it is returned, so an invalid invoice never leaves the service.
Invoices can be created from structured data directly or mapped from a DocuWare record.