Acccount Invoice Section Picking

This module extends the existing invoice section feature so that, instead of grouping invoice lines by sale order, you can group them by the delivery picking (the shipment) they come from.

• A new choice "Group by delivery picking" is added to the company setting that controls how invoice sections are built. When selected, invoice lines linked to products invoiced on delivery are grouped under the corresponding delivery.
• The section heading uses the delivery's reference number by default. If a naming scheme is configured on the customer or on the company, that scheme is used to build the section title instead.
• Only deliveries that are actually done and not yet invoiced are used to create sections, so already invoiced deliveries are not repeated on later invoices.
• The grouping applies to invoice lines whose product is set to be invoiced on delivered quantities; other lines keep the standard grouping behaviour.

The module touches the invoice line model (account.move.line), the company settings (res.company) and the delivery model (stock.picking). It depends on the sale order section module and on stock, so it only makes sense when you invoice sale orders and manage deliveries in Odoo.