When is it appropriate to perform a requirements review?

Performing a requirements review as part of every phase in the project is crucial for ensuring that requirements remain relevant, accurate, and aligned with the project's goals throughout its lifecycle. By reviewing requirements at various stages, project teams can identify misunderstandings, resolve ambiguities, and accommodate any changes in stakeholder needs or project scope that may arise over time. This continuous validation helps prevent costly revisions late in the project, ensures stakeholder alignment, and fosters better communication among team members.

Reviewing requirements solely during the initial development, as suggested by other responses, may lead to missed opportunities for clarification and refinement as the project progresses. Conducting reviews only in the planning stages could neglect important insights gained during the implementation and beyond, which might lead to discrepancies between what was planned and what is actually being developed or needed. Finally, waiting until after implementation to conduct a review is often too late, as it might result in significant rework and impact the project's success and delivery.