Assumptions are future situations beyond the control of the project,. A user requirements document, written by the product manager, is centered around the end user’s needs and expectations for a product.it translates user requirements into. We’ll delve into the essential components, explore best. To help you upsurge towards your business goals, we suggest you to try using a business requirements document. This document is a functional requirements document (frd) template that outlines the sections and content needed for documenting software requirements.