As of 2018.2.620, UI for Xamarin will invoke approximate 600 warnings when compiling an Android project that uses SDK later than 23. This is due to the fact that the UI for Xamarin.Android controls are built on API 23, which will surface warnings at compile time if the project consuming them is using a later version. Although UI for Xamarin is compatible with newer version, and causes no impact on the outcome, these warnings obscure any meaningful warnings the user might have. This is a problem when projects are built in a CI/Cd pipeline and warnings are treated as important/significant for enterprise CD deployment (i.e. scrolling through 600 warnings to find any legitimate warnings is not practical). Available in R3 2018 release.