The project manager should add the assumptions and constraints to the assumption log to track and analyze their impact on the project. The assumption log is a project document that records all project assumptions and constraints throughout the project life cycle. (Reference: PMBOK Guide, 6th Edition, p. 89) The project manager should add the assumptions and constraints to the assumption log, which is a project document that records the assumptions and constraints that affect the project scope, schedule, cost, and quality. The assumption log can help the project manager to identify and analyze the risks that may arise from the validity of the assumptions and the impact of the constraints. The assumption log can also be used as an input for the Identify Risks process, where the project manager can determine the risk impact of the assumptions and constraints and add them to the risk register accordingly. Reference: PMI, A Guide to the Project Management Body of Knowledge (PMBOKGuide), Sixth Edition, 2017, p. 38, 397.