My website is www.meyflycom. I received the below notification from Google Search Console today. Please note that my site is fairly new and I am learning as I go. This is my first website. So, I don't have a lot of technical experience with this. Any help would be much appreciated.
Search Console has identified that your site is affected by 7 Products issues:
Warnings are suggestions for improvement. Some warnings can affect your appearance on Search; some might be reclassified as errors in the future. The following warnings were found on your site:
No global identifier provided (e.g., gtin, mpn, isbn) I don't think I can have this because I sell t-shirts from Printful
Missing field "url" Looks like it is there to me
Missing field "aggregateRating" No clue. I am new, so there really wouldn't be any ratings yet but do I need to add this to my website or is this a google rating?
Missing field "priceValidUntil" no clue
Missing field "brand" Looks like it is there to me
We recommend that you fix these issues when possible to enable the best experience and coverage in Google Search.