UBL 2.1 / CII D16B / EN 16931 CONTEXT

E-Invoice Viewer

Open a structured XML e-invoice as a readable invoice view. Inspect parties, payment, totals, tax breakdowns and line items without submitting the document to an external service.

Validation scope

This viewer performs focused XML structure, field presence, currency and arithmetic consistency checks. It is not a full EN 16931 or Peppol conformance validator and does not replace the current XSD/Schematron validation artefacts.

The European eInvoicing standard binds its semantic model to UBL 2.1 Invoice/CreditNote and UN/CEFACT Cross Industry Invoice D16B. Peppol Billing adds a CIUS/profile and additional rules on top of the EN 16931 model.

The XML is processed temporarily in memory. Invoice contents and filenames are not added to analytics and are not submitted to Peppol, tax authorities, or another external service.