It provides a single reliable source of. It allows you to apply a ratings system to your requirements, so you have the visibility (into the value, status, and description of each requirement) that’s. 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. Are you wondering what a functional requirements document or what an frd is?