Identifier Mismatches

An identifier mismatch happens when a barcode or product identifier from your supplier file points to the wrong Amazon listing. That identifier might be a UPC, EAN, GTIN, or ISBN. If Amazon's catalog connects it to the wrong ASIN, your scan can show data for a product that does not match the item your supplier is actually selling.

These mismatches are frustrating because the identifier can look valid while still returning the wrong listing. The problem is not always in your spreadsheet. It can come from catalog data, reused barcodes, supplier formatting, old packaging, or listings that have been merged or changed over time.

A bad match can throw off the rest of your scan. Pricing, fees, restrictions, pack quantity, sales signals, and profitability are all tied to the ASIN Rocket Source analyzes. If the ASIN is wrong, the row can look better or worse than the real product.

That is why it is worth checking suspicious rows before making buying decisions. Common warning signs include a title that clearly does not match the supplier product, a brand mismatch, a product image that looks wrong, or a pack quantity that makes the numbers feel off.

Use Listing Match to tell Rocket Source whether a specific identifier and ASIN pair is correct. Once you save that decision, Rocket Source applies it automatically to future scans, so you do not have to review the same mismatch again.

If the identifier and ASIN do match, mark the Listing Match as true. If the identifier points to the wrong ASIN, mark it as false. That false match prevents Rocket Source from treating that identifier and ASIN pair as a valid match later.

Before you save a Listing Match, compare the supplier row against the Amazon listing. Check the product title, brand, size, count, variation, and packaging. For multipacks, make sure the listing quantity matches the unit your supplier is selling.

If the issue is only that Amazon's pack quantity is wrong, use Multipack Corrections instead. Listing Match is for deciding whether the identifier belongs with the ASIN. Multipack Corrections are for fixing the quantity used in your calculations.