- An external product ID (barcode) is an attribute containing a unique record to identify a product. Amazon accepts UPC, EAN, and GTIN.
- Once you submit your external ID, you cannot submit new changes in Vendor Central.
- Click on the “Contact Us” button in the “Support” Center of Vendor Central if you would like to add, change, or delete an external ID, and ensure you provide proof of ownership (such as GS1 certificate for UPC ownership).
- In your Catalog, the external product ID may not necessarily match what is listed on the website.