The Recommendations Report outlines different ways you can modify your product data to optimize exposure. Often these recommendations entail providing more product information than you originally supplied. Each recommendation in the left column of the report applies to the number of products listed in the right column.
To see the specific products to which the recommendation applies, click "See full list." Products are listed by the code you provided in your feed.
Whenever you revise the product data in your feed, you will need to re-upload your feed. A new Recommendations Report will be generated after each upload.