One of the important steps while registering to sell on Amazon is to check if you need UPC exemption or not (to sell your products on Amazon. Getting GTIN exemptions – While GTIN/UPC is a mandatory attribute for. In online retail UPC and UPC exemption are common terms. Before you request a GTIN exemption. Step by Step tutorial to learn how to list products using the GTIN (UPC) Exemption you got for.