Create a downpayment invoice (facture d'acompte)

Import an invoice as a downpayment

• You need to set only one invoice line with the ledger account number 4191 and import is using the Import an invoice endpoint

Import the final invoice

• You need to set all your usual invoice lines
• You need to add one negative invoice line with the same amount of your down payment with the ledger account number 4191
• You can then import the invoice using the Import an invoice endpoint

You can also use this to create a downpayment invoice using the create endpoint. However, this will not show as a downpayment in the UI but as a regular invoice