According to the PMBOK Guide, a design change is a type of change request that modifies the product or service specifications, features, or functions. A design change might potentially add value to the project, but it might also affect the project scope, schedule, cost, quality, risk, and other aspects. Therefore, the project manager should not accommodate, consult, or convince the client without following the change management process. The change management process involves identifying, analyzing, documenting, presenting, deciding, communicating, and implementing the change request. The project manager should make transactional decisions focusing on the project goals, which means assessing the feasibility, desirability, and priority of the change request, and preparing a recommendation for the change control board (CCB). The CCB is the formal recognized group that reviews, evaluates, and takes decision on change requests. The CCB can approve, partially approve, or reject the change request based on the project goals, objectives, and constraints. The project manager should communicate the decision of the CCB to the client and implement the approved changes accordingly. References:

PMBOK Guide’s Change Management Process For PMP Exam

Change Log - Project Management Knowledge

Project Management Change Request Form & Process

Change Log Template - Project Management Docs