SEARCH CONSOLE ERROR

Hi,

I received a message from google for error notices on the search console.

Warnings are suggestions for improvement. Some notices may improve the appearance of the site in Search, while others may become errors in the future. The following warnings were found on your site:

• No global identifier specified (e.g. gtin, mpn, isbn)
• Missing field “review”
• Missing field “priceValidUntil”
• Missing field “brand”
• Missing field “aggregateRating”

Where can these fields be corrected on woocommmerce – product – tours?

Regards

Luca