sale_order_invoicing_grouping_criteria

Purpose

Enable configurable grouping rules for sales order invoicing in Odoo.

Features

sale.invoicing.grouping.criteria: Allows defining reusable sets of sale order fields that determine how invoices are grouped when generated.
res.company: Stores the company-wide default sales invoicing grouping criteria used when partners have none specified.
res.config.settings: Exposes configuration to select the default sales invoicing grouping criteria from the accounting settings.
res.partner: Lets each commercial partner pick a sales invoicing grouping criteria that propagates to children and overrides the company default.
sale.order: Applies the partner or company grouping criteria when creating invoices so orders are batched by invoice address, company, currency, and selected fields.