Amazon error 8058: Listing blocked by duplicate-ASIN protectionAmazon's duplicate detection thinks the row you submitted is a near-copy of an ASIN that already exists - same brand and title, or the same GTIN family - even though the identifiers are not byte-identical.How to fix error 8058

Search the catalog for your exact title and for brand + model number and confirm whether the product already exists.

If it exists, list an offer against it instead of creating a new ASIN.

If you are creating a legitimate variation (different size or colour), submit it as a child SKU under the existing parent rather than as a standalone product.

If it is genuinely new, make the differentiating attributes explicit - distinct part_number, model, size_name and colour_name - and re-submit.

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