Cooperation view point vs application structure viewpoints

[Rick Walsh]

Hey guys, 

This is a leveling question. I have an application (A) which depends on a set of services provided by a different platform (which I control). 

My gut says that these services shouldnt be shown on the structure viewpoint for application A, but should be shown on the cooperation viewpoint. 

However, this means that by looking at the structure viewpoint you cant understand that application iA s really just a thin layer over these services.

Is this right?

Any opinions?

Rick