Requirements for IT systems are often divided into two broad categories: Functional Requirements and Non-functional Requirements. Functional Requirements are usually focused on describing the ICT functionality most visible to users. Non?functional requirements are equally important but often less visible to users, they specify criteria that can be used to judge the operation of a system, rather than specific behaviours.

This document contains extracts from 6 tender documents which were devised for the specific needs of the solution being sought by that tender. Overall some 1400 requirements are defined in the extracts thus providing a comprehensive resource.

The extracts are all Non Functional Requirements and provide a valuable source for authors of tender documents to be able to use them as they think fit either through selecting those appropriate for their solution or as an "aide Memoire" to enable them to produce their own comprehensive set

Note: some of the standards or technical products named will be outdated. That should not prevent authors using the NFR details as a base from which to update and localise for their own specific current situation / solution.