According to outline writte eaasy

his is to check on your progress for the writing project so you aren’t cramming everything at the last minute. It also gives a chance to catch any issues early (content, citations, etc.)

This outline must have the framework or the final project (information organized how you plan it to be), most information present, in-text citations for information from sources, and properly formatted list of references. It does not have to have all of your references yet, but should have most of them.