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Factur-X EN16931 integration: compliant invoicing engine for existing systems

Integration of a Factur-X EN16931 engine into existing systems. Generation of PDF/A-3 invoices with embedded XML, XSD and Schematron validation, no SaaS, deployed on your infrastructure.

This page is intended for companies, trades, software publishers and organizations that already have an invoicing system and need to make it compliant with the Factur-X EN16931 standard.

The goal is not to replace your system, but to integrate a reliable and compliant Factur-X generation engine adapted to your existing architecture.

The integration is deployed directly on your infrastructure using a controlled and predictable logic compatible with your current workflows.

Read the technical note on Factur-X compliance

Pricing

Integration services start at €3,900. The final price depends on your existing environment and the complexity of the integration.

The engine handles Factur-X EN16931 document generation, but overall compliance also depends on the quality of your business data, particularly VAT rules and the information provided by your existing system.

An initial assessment is carried out to verify compatibility with your invoicing logic and to identify any business or technical adjustments required before integration.

Regulatory updates

The Factur-X engine includes ongoing compliance support, limited to regulatory changes related to electronic invoicing (Factur-X, XML, VAT, tax obligations, and exchange formats).

These updates apply exclusively to the generation engine and its XML mapping, ensuring continued compliance over time without introducing new features or expanding its capabilities.

What the Factur-X engine enables

Generation of hybrid PDF/A-3 invoices with embedded XML
Compliance with EN16931 standard (Comfort profile)
Full XSD and Schematron validation
Compatibility with electronic invoicing requirements
Integration into existing processes (ERP, internal tools, exports)

Full compliance

Built-in validation

EN16931 standard

No SaaS

Deployed on your server

Integration with existing systems

Use cases

  • Compliance upgrade of an existing invoicing system
  • Factur-X integration into ERP or business software
  • Automated generation of compliant invoices from internal data
  • Replacement of unreliable external tools
  • Preparation for mandatory e-invoicing regulations

Integration into your system

The engine is designed to integrate into your current system without disrupting your existing architecture.

It uses your existing data to generate compliant invoices, without modifying your business tools.

Each integration is adapted to your structure: data formats, workflows, technical constraints and business requirements.

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