Google is at the moment engaged on fixing a bug that forestalls the product variant structured data from exhibiting score stars within the search. This bug was noticed by Jarno van Driel and Ryan Levering from Google confirmed it and mentioned they are going to work on a repair quickly.
Jarno posted on LinkedIn saying, “The brand new schemaorg ProductGroup triggers a price-range Wealthy Consequence. Nonetheless, it doesn’t appear to set off any score stars within the search outcomes – although aggregateRating is a part of the beneficial properties for ProductGroup.”
He additionally posted this different instance:
Ryan Levering from Google wrote “This one is probably going a bug, you should not be eligible for product carousel markup and the wealthy snippet. The wealthy snippet targets single product/group pages.” He then later confirmed the bug saying, “I can verify it is a bug (and an necessary one to repair). We’ll take a look at getting a repair out so you’ll be able to push out the ProductGroup.”
Discussion board dialogue at LinkedIn.