Account Fiscal Position Rule Purchase

This module extends the purchase order screen to automatically choose the right fiscal position for each vendor and delivery address. It works together with the Account Fiscal Position Rule module, which lets you create rules that decide which fiscal position to use.

• When you create or edit a purchase order and change the vendor, the delivery address, or the company, Odoo immediately looks for a matching fiscal position rule and fills in the Fiscal Position field on the order.
• The rule search only considers rules that are marked for use on purchases, so sales rules are not applied to purchase orders.
• The fiscal position is chosen based on the company, the vendor, the vendor's invoice address, and the delivery address.
• This happens automatically without any manual selection, but you can still change the fiscal position manually if needed.

The module affects the purchase.order model and works behind the scenes on the purchase order form. It does not add new menus or screens; it only changes the behaviour of the existing vendor and delivery address fields.