The Scope, structure and elements are like building blocks. An element is a single building block that comes in different sizes and shapes. The structure document describes how those blocks should fit together and the scope tells you which blocks you should use to build your submission.
For more information see How do I know what data to include in my submissions?
Need more help? HEIMS.datacollections [at] education.gov.au (subject: FAQ%20Feedback%20%22What%20is%20the%20difference%20between%20the%20scope%2C%20structure%20and%20elements%20in%20a%20file%3F%22) (Email us)