Operator glossary
ASIN
Amazon's 10-character product identifier — one per detail page, the atom of the whole catalog, distinct from your SKU (internal) and UPC (universal).
The ASIN (Amazon Standard Identification Number) identifies a product page — typically B0-prefixed for non-book products. Parents and children in a variation family each carry their own; your internal SKU maps to an ASIN, and a UPC/GTIN usually anchored its creation.
The catalog rule that matters: one product, one ASIN. Creating a duplicate ASIN for an existing product violates policy and splits your own demand; matching to an existing ASIN puts you on a shared page where the Featured Offer decides who sells. Private-label brands live on ASINs they created and control — with Brand Registry deciding who may edit them.
The numbers
- 10 characters, usually B0-prefixed; unique per detail page (parents and children each have one).
- One-product-one-ASIN is catalog policy — duplicates get merged or suppressed.
Related terms