This situation could have been avoided if a change control process for requirements and their statuses was followed. A change control process is a set of procedures and tools that helps the business analyst to manage changes to the requirements, and to document and communicate the impact and approval of the changes. A change control process also helps to maintain the traceability and quality of the requirements, and to ensure that they are aligned with the business needs and the project scope. References: PMI Professional in Business Analysis (PMI-PBA)Examination Content Outline1, page 23; Business Analysis for Practitioners: A Practice Guide2, page 131.