Thanks for the reply @galad87. This Developer ID Certificate you mentioned belongs to which Apple account? (Apple Developer or Enterprise program) If it's a Developer account, you are right using developer ID Certificate I can code sign my application(.app file) and notarise as well. But the way I want to distribute this software is through an Installer package (.pkg). I don't see any developer id installer certificate in the Apple Developer Program using which i can sign the installer for my application. Hence I am confused between using a Developer account or Enterprise account for distribution.