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critical 8020

Error 8020 — Invalid product ID format

What this means

The product identifier (UPC/EAN/ASIN) doesn't match Amazon's expected format — wrong length, invalid characters, or check digit failure.

Why this happens

Same root causes as Google's invalid-GTIN: leading-zero stripping, wrong identifier type, or typos.

How to fix it

  1. Validate identifiers with check-digit calculators.
  2. Format spreadsheet columns as Text to preserve leading zeros.
  3. Confirm product_id_type matches the value type submitted.
  4. Resubmit.

Common pitfalls