Credit Note PA

Credit Note with reference to a previous Invoice

Description	Validation Rule
When document type is credit note	Reference to Invoice number must be included. The invoice must exist in Billit.
Duplicate Invoice Numbers	Duplicate Invoice Numbers are not allowed. Error message will be returned by PPF and displayed in Billit.

Other remarks:

The invoice must exist in Billit, practical approach:
- During transition phase, no Invoice might exist in Billit. solution :
  - step 1 : create Invoice in Billit, do not send it.
  - step 2 : create credit note. Billit will not prompt an error.

Currently not supported by Billit:

Linking a credit note to multiple related invoices :
- This is supported in France.
- Currently not yet supported by Billit.
When a credit not does not have a link with a credit note :
- In France this could happen with a credit note with CreditNoteTypeCode 262.
- This is currently not supported by Billit.

Example of API content a Credit Note

{
    "OrderNumber": "227010068_Simple2",   //credit note number
    "OrderDate": "2026-05-06T00:00:00",   
    "ExpiryDate": "2026-06-04T00:00:00",  
    "OrderType": "CreditNote",  // when creditnote
    "AboutInvoiceNumber": "121254587",  //Reference to Invoice number : 1) mandatory in France and 2) Invoice must exist in Billit
    "OrderDirection": "Income",    
    "Reference": "4512345678",  
    "PaymentReference": "365878545",  
    "Comments": "additional info",  
    "Currency": "EUR",  
    "DeliveryDate": "2026-04-27T00:00:00",  
    "Customer": {
        "Nr": "0001001999", 
        "Name": "FR demo receive",
        "Addresses": [
            {
                "AddressType": "InvoiceAddress", 
                "Name": "FR demo receive",
                "Street": "place demo receive 987",
                "Zipcode": "75001",
                "City": "PARIS",
                "CountryCode": "FR" 
            },
            {
                "AddressType": "DeliveryAddress",  
                "Name": "FR demo receive",
                "Street": "place demo receive 987",
                "Zipcode": "75001",
                "City": "PARIS",
                "CountryCode": "FR"
            }
        ],
        "Mobile": "+32475366999",  
        "Email": "[email protected]", 
        "VATNumber": "FR37127399999",  
        "PartyType": "Customer",
        "VATLiable": true,  
        "Language": "FR",
        "Identifiers": [  
            {
                "IdentifierType": "CTC",
                "Identifier": "127369999_DEMO",
            },
            {
                "IdentifierType": "SIREN",
                "Identifier": "127362116",
            }
        ],
    },
    "OrderLines": [  //Credit Note : amounts must be positive
        {
            "Quantity": 1.0,
            "UnitPriceExcl": 400.0,
            "Description": "just a single line",
            "VATPercentage": 20.0,
            "Reference": "915025",  //Supplier Article Number
            "DescriptionExtended": "some extended description"
        }
    ]
}