When should traceability for a requirement start and stop?

Traceability for a requirement should start when the requirement is first discovered and continue until verification of its implementation. This encompasses the entire lifecycle of the requirement, ensuring that every stage from its inception to its final manifestation in the product is documented and monitored.

Beginning traceability at the discovery stage allows for a comprehensive understanding of why a requirement was created, including the business needs and stakeholder expectations that motivated it. Continuing traceability until verification guarantees that the requirement has been satisfactorily fulfilled and meets its intended purpose in the final product.

This approach is vital to ensuring quality and alignment with original business objectives, as it helps prevent scope creep and allows for a clear linkage between requirements and the final deliverables. By maintaining traceability throughout all phases, stakeholders can confirm that the implementation aligns with the initial requirements, thus ensuring accountability and clarity in the development process.