A functional requirements document (frd)—also known as a functional requirements specification, functional specification, or functional specification document—is a more. This document underlies the functional requirements for implementing online banking solution (obs) for global bank ltd (gbl). The functional requirements document (frd) is a formal statement of a product's functional requirements. According to the internet, a functional requirements document, abbreviated as frd, is a formal statement of an. The overall obs covers a wide range of features, which are.