Guideline: Review Existing Requirements








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Guideline: Review Existing Requirements















This guideline provides tips for the effective review of requirements.






Relationships



Related Elements


Elicit Stakeholder Requests


Review Requirements






Main Description



You may have requirements specifications from previous or otherwise related systems for reference - these may be helpful to walk through. Or you may have started using the Rational Unified Process some time after the project started. With the group, walk through each requirement to find application behaviors or behavioral attributes. In general, during the walkthrough, you should ignore explanatory information like introductions and general system descriptions. Keep a list of all issues you identify and make sure someone is tasked to resolve each issue. You may need to make some assumptions if a requirement is unclear. Keep track of these assumptions so you can verify them with the stakeholders. Remember who wrote the requirements. Look for possible "misplaced requirements", meaning things that are out of scope for the project. If you don't know whether something is a requirement, ask the stakeholders. It is very effective to perform this type of walkthroughs by using any existing use-case outlines as a framework. Each requirement needs to relate to at least one use case in your outline. If there is no use case to relate to, it is an indication that either a use case is missing or that the requirement is misplaced.





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