I have the following requirement:
"Here is a synthesis of what we need for the products made to order where we collect a deposit two months before delivery.
 At the time of payment of the deposit, VAT is payable and we must have in accounting a debt due to the customer.
 At the time of delivery, this debt must be transformed into turnover (without collecting VAT again)."

The problem with the default advance payment flow is that the tax isn't applied to the payment without resetting it to draft to make manual adjustments. 

Using a 100% downpayment on the invoice, and then a second invoice when the goods are delivered doesn't work either because you would be recording a Sale at the time of the deposit payment.

Is there a cleaner way to process this flow in Odoo 16 Enterprise?