Hi,

To manage a product with multiple barcodes representing different packaging levels (case, box, pack) in Odoo 19, enable Units of Measure and create units for each level (Unit, Pack, Box, Case), defining their ratios. Configure the base product with the "Unit" unit of measure. Then, use either product variants (creating a variant for each packaging level with its specific barcode) or barcode nomenclature (defining rules to identify packaging levels based on barcode patterns).

Barcode nomenclature is generally recommended for its simplicity and flexibility. Test the configuration in both warehouse transfers and the Point of Sale to ensure accurate recognition of quantities based on the scanned barcode. Ensure barcode scanners are properly configured and train users on the new system.

Hope it helps