In TFS 2008, I am trying to modify a build script (TFSBuild.proj). I get the following warning:

The element 'PropertyGroup' in namespace 'http://schemas.microsoft.com/developer/msbuild/2003' has invalid child element 'TeamProject' in namespace 'http://schemas.microsoft.com/developer/msbuild/2003'.

Which is correct, The element PropertyGroup does indeed have a child called TeamProject.

I’m making an assumption that this is caused because of the following line:

<Project DefaultTargets="DesktopBuild" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">

The Xml Namespace doesn’t appear to exist as far as I can tell, although it looks like a standard one. Please can anyone tell me if this is a standard XML namespace, how or where I can view its contents and whether the warning that I am seeing may be caused by it?