Overview

Error 100980 is a common listing error that Amazon sellers encounter when the product identifier they submit — whether a GTIN, UPC, EAN, or JAN — already matches an existing ASIN in Amazon's catalog but with conflicting product information. Understanding how to diagnose and resolve this error is essential for sellers who need to get their products listed quickly and avoid unnecessary delays.

Key Points / What Sellers Need to Know

• Product ID Already Linked — This error means the barcode you submitted is already associated with a different product in Amazon's catalog, and the details you provided don't match what's on file.
• Manufacturers Sometimes Reuse Barcodes — A frequent cause of this error is that manufacturers, especially in categories like apparel, may reuse UPC or EAN codes after a few years, leading to conflicts with older catalog entries.
• Proof of Ownership May Be Required — To resolve the dispute, Amazon typically asks for documentation such as a GS1 certificate or a product image that clearly shows the GTIN value.
• Brand Registry Helps — If you are the brand owner, having an active Brand Registry account can streamline the resolution process.
• Offer-Only Listing Is an Alternative — If you simply want to add an offer to an existing ASIN without modifying product data, you can bypass this error entirely by using offer-only listing methods.

What Causes Error 100980

This error is triggered when a seller submits a product listing with a barcode that Amazon's system recognizes as belonging to a different product. The catalog already has an ASIN linked to that barcode, and the product details the seller is providing — such as title, brand, or category — don't align with what Amazon has recorded. This mismatch creates a conflict that prevents the listing from going through. It's worth noting that Amazon checks certain attributes globally across all regional stores, not just the specific marketplace where you're submitting. This means a conflict originating in one marketplace can block your listing in another, and error messages may even appear in a different language if the conflicting data was entered in a different regional store.