Hello! I received an email from the Google Search Console Team:

Your site has problems (3) in the "Products" category.

Key warnings

Warnings are a reason to think about resource optimization. Some warnings tell you how to improve the appearance of pages in Google search results. What causes a warning today may be classified as an error in the future. Based on the analysis of your site, the following warnings were issued:

No global product identifier specified, such as GTIN, MPN or ISBN

The "sku" field is missing

The "review" field is missing


What does this mean? Is Google making up problems?

There is many topics on forums as well as on google regarding this "problem".
But as an example, if your listing does not have rating and sku, you obviously cannot get rid of this issue ever.

OK, thanks!