Hello,
Several thing to say first we use as a reference the Official Google Micro Data Test,
here
.
I use it to process a test from your product page, and for the result on your product page (managed by HikaShop), I get this result :
We know that there are
many tools to test the MicroData (some work with browser) and the issue is that results can be different from another... And so we have to choose one as you can understand.
Second important point, you have to know that of course
we will always work to eliminate error but the warning are close to
impossible to solve (depends from too many parameters) but you have to know that the warning
don't affect your CEO.
Hope this will explain you the situation.
Regards