Purchase Force Invoiced Quantity

This module extends the purchase order line with a new numeric field called Force Invoiced Qty. It appears as an optional column on the Lines tab of the purchase order form, right after the Invoiced Quantity column. The column is only shown and editable when the purchase order is in the Purchase Order or Locked (done) state; in other states it is hidden and read-only.

The value entered there is subtracted when Odoo calculates the quantity still to be invoiced. The rule applied is: quantity to invoice = received quantity - already invoiced quantity - force invoiced quantity. This recalculation only happens for lines where a force invoiced quantity has been entered, and only when the product's invoicing policy is based on received quantities (not on ordered quantities).

Typical use: a buyer receives goods but the vendor will not invoice part of them (for example a free replacement or a cancelled remainder). By entering that amount in Force Invoiced Qty, the line stops showing an outstanding quantity to invoice, so the purchase order can be billed and closed cleanly.

The module depends on purchase_force_invoiced and touches the purchase.order.line model and the purchase order form view. It does not add new menus or reports.