I want to create a windows 8 app with level of detail equal with 3.
I think about creating a Flat system where some of my pages will have Hierarchical system. (More about this here ---> Msdn Navigation Design)
I must implement the following type of navigation: Content --> European Laws ---> Decisions ---> Decision nr. 155.
Can this navigation design pass the Windows Store Check?
If you know any accepted template with level of detail equal with 3, i'm open for recommendations.
First a disclaimer: I don't evaluate apps for the Windows store, and so I can't speak for what a Windows Store reviewer will or won't accept.
That said, I'm not aware of any concrete rule that you can't have more than three levels. The motivation behind "no more than three levels" is that the user not get lost in the midst of his or her navigation. From what I can see, you have a fairly clear hierarchy of information here and one that I'd say is in the spirit of the design guidelines.
If you do want to explore other options, take a look at apps with similarly hierarchical domains that are in the store now. Perhaps recipe apps? Another resource, though I haven't perused them all, are the Windows 8 Design templates on CodePlex. I'm not sure if any of them go to more than three levels, but they may spark some navigation or design alternatives for you.