Validate UBL invoices and credit notes against the official Peppol BIS Billing 3.0 and EN 16931 rules: XSD, CEN Schematron and Peppol Schematron. Returns every failed rule with its ID, message and location, plus an invoice summary.
Find company records in the official Peppol Directory by VAT/enterprise number or name. Returns declared document types and explicit found/not-found/invalid-format/error states. Does not establish network reachability.
Validate EU VAT numbers in bulk against the official VIES service. Format pre-check per country, company name and address, consultation number as proof, automatic retries when a member state is down.