There are a few guidelines that are followed when you upload your data on Google and the content may not qualify on these guidelines. So always find the features that abide by the guidelines of Google. This is better known by the SEO experts and the developers of the websites. This is the base of any new model and for the old ones that need an update. So now you know what to look for in a rich result content and may be take some notes from the ones that are already tagged as rich results.
READ MORE ::::: Facts About Rich Results On SEO Search | aliveom.com