I have an e-commerce website , so to markup my products i am using schema.org vocabulary.
However, previously i used microdata and google seo recognised it as a structured data and i can see my items in the structured data column.
But, when i click the Rich cards feature, it doesn't show up any markup for my products.
So what i did was i used json-ld
as well.Now, if i were to go to https://search.google.com/structured-data/testing-tool
and fetch my url there, i can see 26
products instead of 13
.
I get it ,i used both of them hence twice the no of products.
What i wanted to know was , why am i not be able to see rich cards and if i mix both of them , does that hinder google search results?