This is a build-to-order app, not an instant download. After purchase we schedule a short scoping call to confirm your VAT setup, seller identity and numbering scheme. Typical delivery is around 10–15 business days, depending on the complexity of your tax configuration. We then install the app to your Shopify admin, run validated test orders for a German and a French order, and hand over documentation.

Yes. Every build includes a defined post-launch support window for fixes and configuration adjustments. Because the EN 16931, ZUGFeRD and Factur-X specifications evolve as the mandates roll out, we offer a maintenance arrangement to keep your profiles aligned with the current schema and validation rules. We confirm the exact terms in writing before we begin.

It is a true hybrid document: a PDF/A-3 with EN 16931 structured XML embedded inside it. The XML is what tax authorities and B2B receivers parse; the PDF is the human-readable view. We validate the generated XML against the EN 16931 schematron rules before the invoice is finalized, so you get a conformant ZUGFeRD or Factur-X file, not a flat PDF.

The app reads the order's billing country via the Admin GraphQL API. German billing addresses are issued under a ZUGFeRD profile and French addresses under a Factur-X profile. Both are EN 16931 based, so the underlying structured data is consistent — the profile controls the country-specific presentation and identifiers. The selected profile is recorded in an order metafield for audit.

No. The app is read-only on orders and only writes to its own order metafields. It does not change your checkout, your Shopify tax settings, your multi-location inventory or your fulfilment flow. It uses your existing Shopify tax lines as the source of truth and maps them to EN 16931 categories — it never recalculates your taxes for you.