IRR_SYNTAX: File syntax not valid

The usual cause

A file is not well formed or does not follow its XML schema. Files must be encoded in UTF-8.

How to fix it

Check the named file against its format, correct the XML and send it again.

The code as published

Le format syntaxique de l’un ou plusieurs fichiers n’est pas correct.

Official text in its original language, from Direction générale des Finances publiques, Spécifications externes de la facturation électronique v3.2 (impots.gouv.fr), mise à jour du 30 avril 2026, under Licence Ouverte / Open Licence 2.0 (Etalab).

Read the official document . Source: Dossier de spécifications externes de la facturation électronique, Dossier général, version 3.2, published by Direction générale des Finances publiques (DGFiP), read on 8 November 2026.

Look at your file

Check the invoice against the rules this portal applies: Check an e-invoice. Check an e-invoice

Other Chorus Pro and PPF codes

• IRR_TAILLE_F File in the delivery too large
• IRR_TAILLE_PJ Attachment too large
• IRR_VID_PJ Empty attachment
• IRR_NOM_F File name not valid
• IRR_NOM_PJ Attachment name not valid
• IRR_EXT_DOC Attachment type not allowed

All Chorus Pro and PPF codes

Updated 8 November 2026