It provides a single reliable source of. A functional specification document (fsd), also known as a functional requirements document (frd), is considered by many project management and software. Documenting the functional requirements provides several important benefits to the organisation and to the process of developing a solution. 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. This comprehensive guide will equip you with the knowledge and tools to create a robust and effective frd template.