# Legacy Xamarin Reference `SacsMobileXamarin` is retained as source reference but is not part of the supported Common build or the .NET 10 migration. The project has been removed from `SaCommonVS.sln`, which is the supported solution used for normal restore, build, and test validation. Open `SaCommonVS.LegacyXamarin.sln` when the Xamarin implementation needs to be inspected or compared with the MAUI implementation. That legacy solution contains `SacsMobileXamarin` and its `SacsStandardBase` dependency. Do not add the Xamarin project back to the supported solution or retarget it as part of routine Common work. Any resurrection or migration should begin with a separate review of its consumers, Xamarin.Forms dependencies, platform requirements, and replacement scope.