Hi,

Some products aren't grouping in Odoo POS despite having "Group Product in POS" enabled for the "Units" UoM category. First, verify the "Unit of Measure Category" and "Unit of Measure" are correctly set to "Units" and "Unit" on the product page. Check for decimal precision issues in product prices and price lists, as even small differences can prevent grouping. Ensure the "Group Product in POS" setting is still enabled in the POS configuration.

If the products have variants, they might not group automatically. Verify barcode configurations and check for duplicate barcodes. Test in a clean environment like a staging database to isolate the issue. Investigate custom modules that might interfere. Clear browser and Odoo caches, and run a database consistency check. Examine Odoo server logs for errors. The most likely causes are inconsistent UoM settings or rounding errors in prices.

Hope it helps