REJ_UNI: Data already sent and processed
What it means
French e-invoicing reason REJ_UNI means the regulatory data for the invoice (F1) have already been sent and processed.
The usual cause
An invoice is identified by its number, the year of its issue date and the supplier's SIREN. Another invoice with the same three already exists, for example a duplicate send or two series with the same numbering.
How to fix it
Check whether the invoice was already sent. If it is a different invoice, give it a new number; under an invoicing mandate the number needs a root of the agent's own.
Once the file is corrected, check it again for free: Check an e-invoice
The code as published
Les données réglementaires ont déjà été transmises et traitées. 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