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Fatal

BR-FR-01_BT-1-2: Invalid characters in invoice or credit note number

In short

Fatal: fails the selected checks.

BR-FR-01_BT-1-2 means the invoice number or credit note number (BT-1) in your French UBL file contains a character that is not allowed. Correct cbc:ID to use only letters A-Z and a-z, digits and the symbols + - _ /, with no spaces, then check the corrected file again.

On this page

What it means

The rule checks the format of the invoice number or credit note number (BT-1) in ubl:Invoice/cbc:ID or cn:CreditNote/cbc:ID. Only letters A-Z and a-z, digits and the symbols + - _ / are allowed. Spaces and other punctuation are not allowed.

Why it matters

French UBL rules restrict the characters you can use in invoice and credit note numbers. A character outside the permitted set causes this check to fail.

How to fix it

If the document has already been issued, check with your bookkeeper or accountant before changing its number. Correct the invoice number or credit note number (BT-1) in your source document so that cbc:ID uses only the permitted characters. Remove spaces and replace disallowed punctuation, such as full stops or brackets, with an allowed symbol such as - or /. Export the corrected UBL file and check it again.

Once the file is corrected, check it again for free: Check an e-invoice

The rule as published

L'identifiant de facture (cbc:ID) contient des caractères non autorisés. Valeur actuelle : " … ". Seuls les caractères alphanumériques et les symboles + - _ / sont autorisés, sans espaces.

Where this rule applies

Rule set Version
France CTC (UBL invoice) 1.4.0-04
France CTC (UBL credit note) 1.4.0-04
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether BR-FR-01_BT-1-2 still fails, and which other rules do.

Updated 8 November 2026