According to the internet, a functional requirements document, abbreviated as frd, is a formal statement of an. 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. Are you wondering what a functional requirements document or what an frd is? Writing a functional requirements document (frd) is an essential step in the software development process. The overall obs covers a wide range of features, which are.