The functional requirements document (frd) is a formal statement of a product's functional requirements. This comprehensive guide will equip you with the knowledge and tools to create a robust and effective frd template. A functional specification document (fsd), also known as a functional requirements document (frd), is considered by many project management and software. Assumptions are future situations beyond the control of the project,. According to the internet, a functional requirements document, abbreviated as frd, is a formal statement of an.