asin
Amazon Standard Identification Number — Amazon's internal product identifier. Unique to Amazon's catalog, distinct from GTIN. Required for Amazon listings; not used by other channels.
Also known as: amazon_asin
Channel support
| Channel | Status | Field name | Notes |
|---|---|---|---|
| Google Merchant Center | Not supported | — | — |
| Meta Commerce Manager | Not supported | — | — |
| TikTok Shop | Not supported | — | — |
| Pinterest Catalog | Not supported | — | — |
| Amazon | Required | asin | — |
| Bing Merchant Center | Not supported | — | — |
Why it matters
ASIN is the primary identifier inside Amazon's catalog. All listings tie back to an ASIN — your offer attaches to an existing ASIN or you create a new one. Without ASIN, you can't list on Amazon.
ASIN — Amazon Standard Identification Number — is the primary identifier inside Amazon's catalog. Distinct from GTIN: GTIN is the manufacturer's barcode (UPC/EAN), ASIN is Amazon's internal identifier. All listings tie back to an ASIN.
The two paths: reuse an existing ASIN (your offer attaches to it) or create a new one (Amazon assigns when Add a Product produces a unique listing). Brand-gated products require explicit brand authorisation; the Brand Registry programme controls which sellers can create or modify ASINs for registered brands.
The locked-ASIN dynamic: for brand-registered ASINs, canonical attributes (title, description, images) are locked to the brand owner. Other sellers can only attach offers — they can't edit the listing content. This is why reseller catalogs sometimes encounter "brand mismatch" or "ASIN locked" issues: the canonical brand on the ASIN doesn't match what the reseller's feed declares.
Format rules
-
10-character alphanumeric (e.g. B08N5WRWNW)
Applies to: Amazon
-
Either reuse an existing ASIN or create a new one via Add a Product
Applies to: Amazon
Valid examples
B08N5WRWNW Standard ASIN format
Common mistakes
SKU-12345 That's your SKU, not an ASIN
Related fields
gtin The Global Trade Item Number — the standardised manufacturer-assigned barcode that uniquely identifies a product across retailers. UPC (12 digits), EAN (13), ISBN (10 or 13), and JAN (8 or 13) are all GTIN variants.
Read moreparent_sku Amazon's equivalent of item_group_id — the parent SKU that groups variants together. Required when listing items with variants on Amazon.
Read moreCommon issues involving this field
FAQ
How do I find the ASIN for my product?
Search Amazon for the product. The ASIN is in the URL (after /dp/) or in the product details section. If no listing exists, you create one and Amazon assigns the ASIN.
Last reviewed: 26 May 2026
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