If a team member is still able (or forced) to charge time to a project months after it ended, the most likely missed closure activity is releasing project resources. In CompTIA Project+ closing activities, resource release/offboarding is a key step: it ensures people are formally transitioned off the project, their assignments are ended in the resourcing/timekeeping system, and they become available to be allocated to new work. If the PM neglects this, the organization’s resource management system may keep the person tied to the closed project code, preventing accurate time charging and creating both reporting and utilization problems.

“Removing access” (A) is a security/offboarding step and might be relevant for systems or repositories, but it doesn’t directly control time code availability or project assignment in resource planning. “Collecting stakeholder feedback” (C) supports lessons learned and continuous improvement, not time charging. “Having the closeout report approved” (D) is important for formal closure, but the specific symptom—charging time incorrectly and being blocked from new projects—points most directly to failing to release resources in the organization’s administrative systems.

So the PM neglected to complete the operational closure step of releasing the project resources, ensuring staffing and timekeeping are correctly transitioned to new work.