A project sponsor requests an enhancement be added to the project. How should the project manager handle this request?

The correct approach is to validate the proposed change's impact on the project. Any change, regardless of its source, must go through the project's change control process. This involves assessing the impact on scope, schedule, cost, quality, resources, and risks. After impact analysis, the change control board (CCB) or relevant stakeholders will decide whether to approve or reject the change. Accepting the request solely because it came from the sponsor bypasses due diligence and can lead to scope creep and project failure. Refusing the request outright is unprofessional and ignores the sponsor's legitimate role in the project. Checking only the budget is insufficient; a change can have significant impacts beyond just cost, affecting other project constraints and objectives.