These are a form of Requirement that must be met to give a solution, feature, or functionality a pass or fail. You should expect to do this a lot as a BA as it is core to writing requirements.
Very quick video to help you grasp what software requirements are.
A few quick and simple functions to help you use SharePoint for business analysis work
how-to-write-requirements
How to make sense of business analysis deliverables
3 Ways to Manage Requirements Traceability
managing-business-requirements-on-sharepoint