The partner commission test setup now uses a unique journal code to align with updated accounting validation rules. This keeps automated checks reliable and helps prevent false failures during ongoing development.

Following the changes introduced by https://github.com/odoo/odoo/pull/59791 for task 2346404. This journal code was already used elsewhere in the tests, so we simply replace it by a unique one.

The module description now clarifies when landed costs can be applied in Mexican electronic invoicing workflows. This helps users understand that landed costs require FIFO or AVCO costing and automated inventory valuation before setup or use.

Landed costs can only be applied to products with a FIFO or AVCO costing methods and an automated inventory valuation.