title: Error "The item "obj\Debug\abcd.Global.resources" specified more than once in "Resources" .Duplicate items not supported by "Resources" parameter
body: <p>I am working on old .net application where there multiple files and folders under the project name. There is a folder WebServices which has its own SLN file, <code>global.asax</code> files.</p>
  <p>When I exclude this project the build is successful. But as I add include this folder, there is a build error of <code>Duplicate items not allowed in references parameter</code>.</p>
  <p>I cannot remove any of global files from references. Please suggest some solution as I have to make some code changes in <code>track.asmx</code> file in webservices folder and build without errors.</p>