Amazon error 5461: Product type does not match the existing ASINYou submitted a row whose product type (feed_product_type / item_type) is different from the product type Amazon already has on file for that ASIN. Amazon will not let a seller re-classify an existing catalog item through a normal flat-file upload, so the whole row is rejected.How to fix error 5461

Open the ASIN's live detail page and note which category it actually sits in.

Download the category listings template that matches that category, not the one you guessed.

Set feed_product_type (and item_type / recommended_browse_nodes) to the values used by the live ASIN.

Re-upload with only the columns you actually need to change - sku, external_product_id, price, quantity.

If the ASIN is genuinely mis-categorised, open a Seller Support case and ask the catalog team to re-classify it; do not try to force it via a feed.

All Amazon flat-file error codes