Einvoice Validator

The einvoice validator assesses electronic invoices for structural integrity and regulatory conformance. It serves Accounts Payable teams, ERP administrators, internal auditors, and supplier onboarding teams who process electronic invoices or integrate invoicing data into financial systems. It is designed for onboarding and pre-payment checks to reduce errors and audit findings.\n\nConceptually, the tool ingests invoice data, applies multiple standards (EN 16931 EU, Peppol BIS, UBL 2.1), and computes line subtotals and tax amounts. It validates required fields, formats, and cross-field constraints such as total_line_amounts equaling sum of lines, and tax totals matching declared taxes.\n\nOutputs include a validity flag, a structured list of errors with codes and severities, a conformance score, and a machine-readable report. It supports exporting JSON or XML reports for ERP pipelines and audit trails, enabling seamless integration with downstream systems.\n\nUnique differentiators are cross-standard support, precise error taxonomy, and remediation guidance. It identifies regional ID formats, currency rules, and date formats, and offers optional regional checks. It is useful for onboarding suppliers, ensuring compliant invoicing processes, and reducing payment delays due to data quality issues.\n\nExamples: validating a EU supplier invoice with EN 16931, confirming VAT IDs format, and flagging a missing due_date. Another example validates a Peppol submission with correct document type and correct tax breakdown.