Amazon uses product identifiers such as UPCs and ASINs to connect products to existing catalog listings. This helps prevent duplicate listings and ensures customers see accurate product information.
🏷️ What Is a UPC?
A UPC (Universal Product Code) is a manufacturer-assigned barcode used to identify a product.
📦 What Is an ASIN?
An ASIN (Amazon Standard Identification Number) is Amazon's unique identifier for a product listing in its catalog.
🔍 How Product Matching Works
When a seller enters a UPC, Amazon searches its catalog for a matching product. If a match is found, Amazon associates the product with an existing ASIN rather than creating a new listing.
This helps:
Prevent duplicate listings
Maintain catalog accuracy
Improve product discoverability
✅ Summary
Amazon uses UPCs and ASINs together to identify products, match inventory to existing listings, and maintain a consistent catalog experience.