Currently, odoo allows a single barcode for product and product variants but sometimes we have to manage multiple barcodes for one product. "Point Of Sale Product Multi Barcode" module helps you to set up multiple barcodes for a single product or product variant in the POS Odoo. You no need to select a product and do one by one. When you scan the different barcodes for the same product then product quantity update in the cart. It generates an alert for the unknown barcode. cheers!