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Universal Product Code. The Universal Product Code (UPC) is a barcode symbology that is widely used in the United States, Canada, United Kingdom, Australia, New Zealand, in European and other countries for tracking trade items in stores. UPC (technically refers to UPC-A) consists of 12 numeric digits, that are uniquely assigned to each trade item.
How to Enter a UPC code Universal Product Codes (UPCs) are 12-digit numbers used to identify products. Find your UPC code on your product's packaging or back cover.When entering a UPC Code for a listing using Pre-Filled Item Information, be sure to enter the entire number at the bottom of the bar code, including the smaller numbers on the left and right hand sides.Note: In many cases, eBay only has access to the information relating to the latest version of the product.hen entering a UPC Code for a listing using Pre-Filled Item Information, be sure to enter the entire number at the bottom of the bar code, including the smaller numbers on the left and right hand sides. Note: In many cases, eBay only has access to the information relating to the latest version of the product.