Yes and no, as I’ll explain.
It would be best if you had a UPC for your Amazon product because Amazon requires all new product detail pages to have a unique product identifier, such as a UPC, EAN, GTIN, and so on when they are established. These are all instances of product identifiers.
Amazon needs to ensure that the brand name used to generate the new listing corresponds to the brand name connected to the UPC in the GS1 database. GS1 is the worldwide standard for product barcodes, and it is through them Amazon validates your UPC.
If the UPC does not match the information supplied by GS1, Amazon will deem your UPC invalid and will not allow you to sell your product.
Under some conditions, Amazon permits sellers to offer new items without a UPC or other product identification. We’ll go through this in more detail later.