Identifiers in France

Identifier Overview

Multiple identifiers can be used for defining the receiver and the sender :

Name	Info	Billit Identifier ID in API	Peppol code	Where to put in API
SIREN	Enterprise number (9 number, including check digit) - (update 31/05/2026) previously Sirene)	SIREN	0002	Identifiers
SIRET	Is Siren (9 digits) with a seperate establishment number (5 digits) = 14 digits. So for 1 Siren, there can be multiple Siret Numbers for one company (Establishment Number)	SIRET	0009	Identifiers
VAT number	French VAT number. Consists of FR + the Siren number.	not needed	9957	VATNumber
Suffixe	Routing address to specified by the receiver for specific routing purposes. This number is Siren + additional code. Can also be used by the sender.	CTC	0225	Identifiers
CTC	Additional Electronic Address specified by the receiver for specific routing purposes. Address can be long, max. 130 characters. Can also be used by the sender. Considered as the primary identifier. Standard value is the Siren number, can be extended with more information.	CTC	0225	Identifiers
Codes Routage	B2G only, is an extra identification delivered by the receiving goverment customer (B2G in preparation in France)	next step	next step	Identifiers

So for a company minimum identifiers needed are:

VAT Number
Siren or Siret
CTC (primary identifier)

How to include your Customer Identifiers in Billit

Identifiers you should include:

If the company has a VAT number, it should always be included
If the customer has registered with a specific identifier, you should include this identifier

Examples in Json API when posting an invoice, for the customer segment:

    "Customer": {
        "Nr": "000700999,
        "Name": "BAUDIN TEST CHATEAUNEUF",
        "VATNumber": "FR25842499999", 
				"PartyType": "Customer",


        "Addresses": [
            {
                "AddressType": "InvoiceAddress",
                "Name": "BAUDIN TEST CHATEAUNEUF",
                "Street": "Rue de la Brosse 999",
                "Zipcode": "45110",
                "City": "CHATEAUNEUF SUR LOIRE",
                "CountryCode": "FR"
            }
        ]
  		 "Identifiers": [
        {
        "IdentifierType": "SIRET", 
        "Identifier": "84249114400999"
        }
}

    "Customer": {
        "Nr": "000700999,
        "Name": "BAUDIN TEST CHATEAUNEUF",
        "VATNumber": "FR25842499999", 
				"PartyType": "Customer",


        "Addresses": [
            {
                "AddressType": "InvoiceAddress",
                "Name": "BAUDIN TEST CHATEAUNEUF",
                "Street": "Rue de la Brosse 999",
                "Zipcode": "45110",
                "City": "CHATEAUNEUF SUR LOIRE",
                "CountryCode": "FR"
            }
        ]
  		 "Identifiers": [
        {
        "IdentifierType": "SIRENE", 
        "Identifier": "842491144"
        }
}

    "Customer": {
        "Nr": "000700999,
        "Name": "BAUDIN TEST CHATEAUNEUF",
        "VATNumber": "FR25842499999", 
				"PartyType": "Customer",


        "Addresses": [
            {
                "AddressType": "InvoiceAddress",
                "Name": "BAUDIN TEST CHATEAUNEUF",
                "Street": "Rue de la Brosse 999",
                "Zipcode": "45110",
                "City": "CHATEAUNEUF SUR LOIRE",
                "CountryCode": "FR"
            }
        ]
  		 "Identifiers": [
        {
        "IdentifierType": "SIRENE", 
        "Identifier": "842491144"
        },
				{
        "IdentifierType": "CTC",
        "Identifier": "842491144_12345"
         }
	}