Until now, a product variant could hold one barcode. That's a problem when the same item arrives with a manufacturer's UPC on the box, your own private-label EAN on the shelf tag, and an ASIN on a marketplace listing. You had to pick one and keep the rest in a spreadsheet. Now you can add up to 20 barcodes to a variant, and any of them identifies the product. What you can do Add, scan, and remove barcodes right on the variant details page, or from the Shopify app on your phone. Give each barcode a type: UPC, EAN, ISBN, GTIN, or ASIN, and we'll check the value against that standard's format, so