Hi,

Bill control policies

In Odoo, the bill control policy determines the quantities billed by vendors on every purchase order, for ordered or received quantities. The policy selected in the settings will act as the default value and will be applied to any new product created.

Configuration

To view the default bill control policy and make changes, go to Purchase ‣ Configuration ‣ Settings, and scroll down to the Invoicing section. Here, there are the two Bill Control policy options: Ordered quantities and Received quantities.

The policy selected will be the default for any new product created. The definition of each policy is as follows:

Ordered quantities: creates a vendor bill as soon as a purchase order is confirmed. The products and quantities in the purchase order are used to generate a draft bill.

Received quantities: a bill is created only after part of the total order has been received. The products and quantities received are used to generate a draft bill. An error message will appear if creation of a vendor bill is attempted without receiving anything.

Official Documentation: https://www.odoo.com/documentation/16.0/applications/inventory_and_mrp/purchase/manage_deals/control_bills.html

Thanks