A functional specification document (fsd), also known as a functional requirements document (frd), is considered by many project management and software. It provides a single reliable source of. We’ll delve into the essential components, explore best. An frd or functional requirements document serves as a contract for formal statement, between the business stakeholders and the technology team, on an application’s functional requirements. This document is a functional requirements document (frd) template that outlines the sections and content needed for documenting software requirements.