Specific Content Requirements PA

Business Process Type

For each invoice, an invoice type must be defined on header level. The basic options are :

Type	Not (fully) Paid	Already Paid
Goods Invoice	B1	B2
Service Invoice	S1	S2
Mixed Invoice	M1	M2

See subpage for more information.

Define Customer Identifier

Find the identifiers of the customer. Include them in Billit.

More info : Identifiers PA

Use Correct Tax rates

Keep in mind that correct tax rates are very important due to to e-reporting. More info : https://docs.billit.be/docs/tax-codes-pa-france

Selection of the Invoice Format of the Receiver - Determined by Billit

Sending the invoices to the receiver must be in a format registered by the receiver. Billit will automatically select a format that is registered by the receiver, you do not have to set the format yourself.

Some important validation rules for France

Description	Validation Rule
When document type is credit note	Reference to Invoice number must be included. More info on credit note : see https://docs.billit.be/docs/credit-note-pa
Duplicate Invoice Numbers	Duplicate Invoice Numbers are not allowed

Include Subject Codes as a Note

The 1.4 update of validation rules (June 30, 2026) specifies that specific subject codes must be included.

Current situation : Billit automatically includes fixed text for the subject codes (no need to specify it per invoice).

Current content:

  <cbc:Note>#PMT#En cas de retard de paiement, une indemnité forfaitaire pour frais de recouvrement de 40 euros est due (art. L441-10 du Code de commerce).</cbc:Note>
  <cbc:Note>#PMD#Tout retard de paiement entraîne l'application de pénalités de retard au taux de trois fois le taux d'intérêt légal.</cbc:Note>
  <cbc:Note>#AAB#Aucun escompte accordé pour paiement anticipé.</cbc:Note>

Example of API content of an Invoice

{
    "OrderNumber": "227010068_Simple2",   //invoice number
    "OrderDate": "2026-06-06",   //invoice date
    "ExpiryDate": "2026-07-04",  //due date
    "OrderType": "Invoice",
    "OrderDirection": "Income", 
    "Reference": "4512345678",  //order number of the supplier
    "PaymentReference": "365878545",  // if a payment reference is required 
    "Comments": "additional info",  // this will go in the note section as additional free text info
    "Currency": "EUR",  //Mandatory
    "DeliveryDate": "2026-06-05",  //Optional
    "BusinessProcessType": "B1",  // See documentation for allowed values
    "Customer": {
        "Nr": "0001001999",  //only if you want to store your number in Billit
        "Name": "FR demo receive",
        "Addresses": [
            {
                "AddressType": "InvoiceAddress",  // this is the billing address
                "Name": "FR demo receive",
                "Street": "place demo receive 987",
                "Zipcode": "75001",
                "City": "PARIS",
                "CountryCode": "FR"  //mandatory
            },
            {
                "AddressType": "DeliveryAddress",  // optional delivery location
                "Name": "FR demo receive",
                "Street": "place demo receive 987",
                "Zipcode": "75001",
                "City": "PARIS",
                "CountryCode": "FR"
            }
        ],
        "Phone": "+335845366999",  //only if you want to include customer contact phone
        "Email": "[email protected]", 
        "VATNumber": "FR37127399999",  // mandatory if customer has VAT number
        "PartyType": "Customer",
        "VATLiable": true,  // Is by default true when VAT number is communicated
        "Language": "FR",
        "Identifiers": [  // see documentation about identifiers
            {
                "IdentifierType": "SIREN",
                "Identifier": "127362116",
            },
            {
                "IdentifierType": "CTC",
                "Identifier": "127369999_DEMO",
            },
        ],
    },
    "OrderLines": [
        {
            "Quantity": 1.0,
            "UnitPriceExcl": 400.0,
            "Description": "just a single line",
            "VATPercentage": 20.0,
            "Unit": "PCE",
            "DescriptionExtended": "some extended description"
        }
    ] 
}