http://blogs.esri.com/Dev/blogs/mobilecentral/archive/2009/05/20/Understanding-Spatial-Reference-in-the-Mobile-SDK_2E002E002E00_.aspxIn this article we will explain the Spatial Reference object model and highlight what you need to know in order to build effective mobile applications that leverage the complexity of coordinate systems and the transformations between them. Also find withenCommunityServer 2.1 SP2 (Debug Build: 61120.2)