Attesta ‑ E‑Rechnung & ZUGFeRD

Attesta turns each paid Shopify order into a ZUGFeRD 2.2 invoice: a PDF an accountant can read with the EN 16931 XML embedded inside it, so one file satisfies both. Public-sector buyers get XRechnung with Leitweg-ID routing instead. Buyer country and VAT-ID decide the tax treatment, so reverse charge, intra-community supply and export are applied per order rather than by hand. Refunds become Stornorechnungen with the reference intact. Documents are archived for the German ten-year retention.