A functional specification document (fsd), also known as a functional requirements document (frd), is considered by many project management and software. To help you upsurge towards your business goals, we suggest you to try using a business requirements document. This document underlies the functional requirements for implementing online banking solution (obs) for global bank ltd (gbl). Documenting the functional requirements provides several important benefits to the organisation and to the process of developing a solution. The frd is produced by business analysts or sometimes the technical team in response to the business.