Hi,

You want to sell a generic product (e.g. “QHD 1440p Monitor”) at a fixed price in quotations and invoices, but only decide during delivery which actual brand/model to ship from stock. In Odoo, this is tricky because sales documents show what you sell, while inventory must track what you physically move. The simplest workaround is to manually replace the product in the delivery order, so stock reduces for the real item, though this may also update the sales order/invoice. A cleaner approach is a small customization where sales and invoices always show the generic product, but at delivery you select the actual items shipped, and Odoo adjusts stock accordingly. This ensures customer-facing documents remain generic while inventory remains accurate.

Hope it helps