This error is commonly referred to as a "single matching error" and occurs when your product ID (such as UPC, EAN, JAN, and ISBN) corresponds to the product ID of an existing ASIN; that is, some of the information you are submitting contradicts the product information (such as title, brand, color, and color size) that is already present for that particular ASIN.
"The provided SKU [SKU] conflicts with the Amazon catalogue. The standard product ID value(s) provided for this SKU corresponds to the ASIN [ASIN]; however, some information is in conflict with the Amazon catalogue. The conflicting attribute values(s) are Brand (Merchant: [MERCHANT_VALUE] / Amazon: [AMAZON_VALUE]). If your product is this ASIN, modify these attributes to reflect Amazon catalogue values. If your product is different from this ASIN, check if the standard product ID value(s) are correct."
This matching error occurred because we found a similar product in the Amazon catalogue. However, there is a discrepancy between some of the information you have submitted versus what is on Amazon. Hence, you must check if the product found is the same as the one you are trying to list.
To verify this information on Seller Central, go to Inventory > Fix Your Products and filter by Matching Reconciliation Conflicts on the left side of the screen.
This tool will help you solve matching conflicts by providing visibility on similar products found in the Amazon catalogue (if any), highlighting the discrepant information, and offering a one click experience to confirm the matching or request Amazon to fix its catalogue.
To ensure the product found in the Amazon catalogue is the same as the one you are trying to submit, check the discrepant attributes below the columns Product submitted by you (your submission) and Product at Amazon (what is in the Amazon catalogue). Additionally, you can click the product title (next to the product image) and see the detail page of the item. This will be the page shown to the customers, containing all the information available for this product.
After you have ensured that they really are the same product, you must click Accept Amazon’s value . Your submission will be processed in the next 15 minutes and your product will appear in your inventory in Seller Central.
If after this time your product does not appear in your inventory, another issue may have happened. Go to Fix your products > All issues and search for your product. Once found, resubmit the information regarding the other type of issue found. If you are not able to find your product, contact Selling Partner Support.
If the product Amazon found is different than the one you are submitting, click Request Amazon to update and create a new request. A pop-up window will appear and you will be required to provide more information about the discrepancy found. Amazon will analyse the information provided and reply on Seller Central. To keep track of your request, go to Help > Case log.
You can follow the same process to create a request, in case the product in the Amazon catalogue has less information or different values that you don’t agree with.
If the information in the Amazon catalogue for this product appears to be incorrect, contact Selling Partner Support.
To remove products using the Listing Reconciliation tool, select the products and click Delete selected on the green bar that will appear on the top of the page.
This feature currently solves matching issues when only one matching ASIN was found (error code 8541). To solve errors when two or more related products were found (error code 8542), you must adjust the information in your catalogue and resubmit a new template. For more information on how this process works, go to Error 8542.
If the information in the Amazon catalogue for this product appears to be incorrect, contact Selling Partner Support.