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.
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.
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.