LemonFacturX

LemonFacturX turns every Dolibarr client invoice into a compliant Factur-X (EN 16931) electronic invoice, automatically. On each generated invoice, the module embeds a CrossIndustryInvoice XML and produces a valid PDF/A-3, the format required by the French e-invoicing reform.

Features

• Fully automatic: no manual step. Each validated client invoice becomes a Factur-X PDF/A-3 with the embedded EN 16931 XML.
• French compliance (BR-FR): SIRET and SIREN placed in the correct CII fields (ISO 6523 scheme IDs), mandatory legal mentions, VAT exigibility, VAT franchise handling, credit notes, document discounts, intra-community supplies.
• Chorus Pro (B2G): for public-sector invoices, an additional Chorus-profile PDF is generated (service code, engagement, contract reference) without altering the standard Factur-X.
• ODT invoice models (since 3.8.0): the Factur-X is also injected into invoices generated from an ODT template converted by LibreOffice, not only the native TCPDF models.
• Verify & Regenerate: buttons on the invoice card to re-check the embedded XML (XSD + business rules) before sending, or regenerate the Factur-X after a data fix.
• Built-in diagnostic: a configuration checklist flags anything missing for full compliance (embedded fonts, seller data, bank account, VAT number format).
• REST API & batch export: read the embedded XML and compliance status through the API, export the XML in bulk.
• Robust injection: isolated subprocess by default, with an in-process fallback so it also runs on hardened or shared hosting where exec() is disabled.

Validation

Each generated XML is validated against the EN 16931 XSD and a set of business rules (BR-*) before injection. Optional PDF/A-3 post-validation with veraPDF.

Compatibility

Dolibarr 19 to 23, PHP 8.1 and above. Open-source (GPL).

Support: hello@hellolemon.fr - 06.26.30.63.29 - https://hellolemon.fr
The module ships as a self-service install — you install and configure it yourself with the documentation. Installation assistance is available on request, billed per support ticket.