According to the PMP Exam Content Outline, one of the tasks of a project manager in the execution domain is to "Implement approved changes and corrective actions by following the change management plan in order to meet project requirements." This implies that the project manager should update the assumptions log and change log, and implement the change control process when the assumptions change during the execution phase. The assumptions log is a tool that documents the assumptions and constraints of the project scope, and the change log is a tool that records the changes that occur during the project life cycle. The change control process is a set of procedures that defines how changes are proposed, reviewed, approved, implemented, and communicated. By following these steps, the project manager can ensure that the changes are aligned with the project objectives and stakeholders' expectations, and that the impact of the changes on the project scope, schedule, cost, quality, risk, and benefits are assessed and managed. References:
* : PMP Exam Content Outline
* : A Guide to the Project Management Body of Knowledge (PMBOK Guide), Sixth Edition, Chapter
4.1.3.2 and 4.6.3.2
* : A Guide to the Project Management Body of Knowledge (PMBOK Guide), Sixth Edition, Chapter 4.6
* : Business Analysis for Practitioners: A Practice Guide, Chapter 5.5.2 and 5.5.3