Overview

Amazon sellers encounter error 99106 when a product identifier in a feed cannot be linked to any entry in Amazon’s catalog. The mismatch blocks the affected rows, delaying the appearance of those items on the marketplace. Resolving the issue quickly restores the feed flow and prevents lost sales.

Key Points

• Identifier mismatch — The error appears when the UPC, EAN, ISBN, or other code supplied in the feed does not correspond to a catalog record, for example a typo that changes “012345678905” to “012345678906”.
• Feed rejection — Rows that trigger 99106 are omitted from processing, so the products remain invisible to shoppers until the problem is fixed.
• ASIN substitution — Supplying the correct Amazon Standard Identification Number (ASIN) in the product‑id field eliminates the mismatch, because ASINs are guaranteed to exist in Amazon’s database.
• Common causes — Misspelled codes, use of non‑GS1‑registered identifiers, or a product‑id‑type that does not match the code format (e.g., marking a UPC as an EAN) all generate the error.
• Resolution speed — Updating the product‑id and product‑id‑type columns and re‑uploading the file usually clears the error within a single feed cycle.

How to Fix Error 99106

1. Locate the correct ASIN — Search the Amazon storefront for the exact product title, copy the ten‑character ASIN from the URL (e.g., “…/dp/B07XYZ1234”) or from the “Product Information” section on the detail page.
2. Replace the mismatched identifier — In the flat file, delete the erroneous UPC/EAN from the product-id column and paste the ASIN you just captured.
3. Adjust the identifier type — Change the value in the product-id-type column from “UPC” or “EAN” to “ASIN” so Amazon knows which identifier you are providing.
4. Validate the row — Run the file through Amazon’s “Check Your File” tool or a spreadsheet validation script to confirm that the ASIN column now contains a ten‑character alphanumeric string and that no extra spaces remain.