Tax Cash Basis Group Base Lines

When a tax is set to cash basis, Odoo creates extra journal items once the invoice is paid. Before this module, one base line was created for each original invoice line, which could produce many nearly identical lines in the cash basis journal entry.

This module changes how those base lines are prepared. It builds a grouping key from the information that makes a base line unique: the original journal entry, the base account, the tax, the tax repartition line, the tags, the currency, the partner and the entry type. Lines that share the same key are then created together, so the cash basis entry contains fewer, consolidated base lines.

• The grouping applies to both customer and vendor invoices and credit notes.
• The generated lines keep the original entry name, the base account, the tax, the tags, the currency, the partner and the tax repartition line.
• The lines are marked as tax exigible and are attached to the new cash basis journal entry.

It only touches the reconciliation logic used to build cash basis entries (account.partial.reconcile). There are no new menus, screens, settings or reports; the change is automatic and only affects the number of lines produced in cash basis journal entries.