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One of the inputs in project management plan. The project management plan contains schedule management plan and schedule baseline. This is your reference point here. Using work performance data from the direct and manage project work process, you evaluate the current status of your project in terms of activities that have started, their progress (e.g., actual duration, remaining duration, and physical percent complete), and which activities have finished. Using this info you will generate work performance information . You are also receiving the work performance report from the seller through monitor and control project work. Using work performance info and report, you will compare it with your schedule baseline.