We reported the problem with 8 values per article to Incomedia some time ago, so far no solution.So far it's been a warning on Google.
It seems to differ from country to country, we hope for a solution from Incomedia before the warning becomes an error and thus a devaluation of the shop.

JJ.

What is all about?
Could you explain those issues to the general WS X5 user?
Thx!

HI

Google is important product information. Their unavailability is a disadvantage.

link: https://helpcenter.websitex5.com/es/post/217916

i would see it as an invitation from google to place a tag. you will get inspired at www.schema.org. check the tag / script at Structured Data Testing Tool and place it when tested ok and see if google accepts the solution. 

i think this is not a software matter, but an seo matter