This document underlies the functional requirements for implementing online banking solution (obs) for global bank ltd (gbl). [provide a list of contractual or task level assumptions and/or constraints that are preconditions to preparation of the frd. What is a functional requirements document? 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. Streamline your project planning with our comprehensive functional requirements document template.