A system migration project is in its closing phase. The project manager is being pressured to close the project. They communicated with all stakeholders, but the last department to migrate reports they did not receive the notification. What should the project manager do?

The project is in its closing phase, but an outstanding issue has been identified: a department did not receive a critical notification for migration. This is a defect or an uncompleted task that needs to be addressed before formal closure. The project manager should log the issue to formally document it and assign it to the appropriate team member(s) for resolution. This ensures the issue is tracked and resolved, maintaining project quality and stakeholder satisfaction before final closure. Closing the project immediately (option A) would leave an unresolved issue and potentially lead to future problems. Escalating to the sponsor (option C) is premature; the project team should first attempt to resolve operational issues. Waiting until the end of the week (option D) delays resolution and could impact the department's migration.