Yes, there are.
As Trusted Independent Photographers, we must follow Google’s privacy and appropriate content guidelines. The content guidelines are seldom an issue since they primarily restrict things like defamation and adult content. Google’s privacy guidelines, on the other hand, include a stipulation that the POIs we submit must not include recognizable people, and that is sometimes an issue. For example, if we’re shooting a POI of a showroom or restaurant, we must clear the area before we shoot. We can get away with showing the back of a head, but faces are a no-no.