To Validate a Single Product,

• Go to the Magento 2 Store Admin panel.
• On the left navigation bar, click the BESTBUY INTEGRATION menu.
  The menu appears as shown in the following figure:
  
• Click Product Listing.
  The BestBuy Product Listing page appears as shown in the following figure:
  
• Scroll down to the required product row.
• In the Action column of the respective row, click the Validate  icon.
  If the product is validated successfully and a success message appears on the top of the page.
  
  If there is an error, then an INVALID button appears in the Validation column of the respective product row.
• To view the cause of product invalidation, click the respective INVALID button.
  A dialog box appears as shown in the following figure, which displays the errors related to the product.
  
• Correct the issues and then again click the Validate icon to validate the product.