{"api_version":"1","rulesets":[{"name":"structure","version":"1.1.0","title":"Document structure","description":"Required identifiers, dates, currency and safe parsing of supported structured invoice syntaxes.","source":{"name":"OASIS UBL 2.1 specification","url":"https://docs.oasis-open.org/ubl/os-UBL-2.1/UBL-2.1.html"}},{"name":"irish-vat-invoice","version":"2026.08.1","title":"Irish VAT invoice readiness","description":"Document-verifiable full, simplified and credit-note particulars published by Irish Revenue. Transaction facts outside the document are reported as undetermined.","source":{"name":"Irish Revenue \u2014 VAT invoice information","url":"https://www.revenue.ie/en/vat/vat-records-invoices-credit-notes/invoices/information-required-vat-invoice.aspx"}},{"name":"en16931","version":"1.3.16","title":"EN 16931 validation","description":"Official CEN/TC 434 Schematron validation artefacts applied to supported UBL and CII XML.","source":{"name":"CEN/TC 434 validation artefacts","url":"https://github.com/ConnectingEurope/eInvoicing-EN16931/releases/tag/validation-1.3.16"}},{"name":"ireland-modernisation","version":"2026.08","title":"Ireland VAT Modernisation readiness","description":"Published Irish eInvoicing direction; unpublished technical details remain pending.","source":{"name":"Irish Revenue \u2014 VAT Modernisation","url":"https://www.revenue.ie/en/vat/vida-vat-modernisation/index.aspx"}},{"name":"eu-cross-border-vat-readiness","version":"2026.08.1","title":"EU cross-border VAT readiness","description":"Document evidence for explicitly identified intra-Community supplies; external evidence remains outside-document.","source":{"name":"Irish Revenue \u2014 zero rate on intra-Community supplies","url":"https://www.revenue.ie/en/vat/goods-and-services-to-and-from-abroad/intracommunity-supplies/supplies-of-goods-to-businesses-in-the-european-union-eu.aspx"}},{"name":"arithmetic","version":"1.1.0","title":"Invoice arithmetic","description":"Decimal consistency checks for line amounts, VAT breakdowns and document totals.","source":{"name":"European Commission \u2014 EN 16931 compliance","url":"https://ec.europa.eu/digital-building-blocks/sites/display/DIGITAL/Compliance+with+eInvoicing+standard"}}]}