I just set up my site to make it better thanks to the micro-referenced data.

After finishing the creation of meta-data, I checked via webmaster tool the result of my work and my a priori data are taken into account (see here).

Today I had a look through the webmaster tools -> Structured Data and then surprise! I have a groin ad 50 with the error field missing: price while the price is this! any idea? thank you