By default, Katalon looks for the Android build-tools and platform-tools in the following location…/.katalon/tools/android_sdk. The request is to allow the user to edit Android SDK path on Preferences\Katalon\Mobil to stop the copy and pasty of files from one location to another.
For more information, please refere to forum discussion:
http://forum.katalon.com/discussion/4588/click-on-record-mobile-always-pop-up-android-sdk-is-missing