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. 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. Writing a functional requirements document (frd) is an essential step in the software development process. To help you upsurge towards your business goals, we suggest you to try using a business requirements document.