Hi,

In Odoo 19, validating an inventory adjustment for products under a Perpetual inventory valuation category can trigger a validation error because the system attempts to automatically create a journal entry to reflect the stock value change. This error—“Missing required value for the field 'Journal' (journal_id)”—occurs if the Inventory Valuation Journal is not configured on the product category. Products under Periodic valuation do not have this issue because Odoo does not generate accounting entries automatically for them.

To resolve the issue, ensure that the product category has Perpetual valuation selected, and that the Inventory Valuation Journal, as well as the Stock Input and Output accounts, are properly set. Once configured, inventory adjustments for these products can be validated successfully, as Odoo can then create the necessary accounting entries automatically. It’s essential to check that all products using Perpetual valuation have a journal assigned to prevent this error in future adjustments.

Reference:-

* https://www.odoo.com/documentation/19.0/applications/inventory_and_mrp/inventory/product_management/inventory_valuation/inventory_valuation_config.html

* https://www.youtube.com/watch?v=jqMwAkv1f3g

Hope it helps

In the V19 Community Edition, the only way to setting the inventory valuation is in the product category

have you set up the charts of accounts, and make sure you have the correct journal selected on the valuation section of accounting settings menu