Which of the following is NOT a key element of an effective project closing process?

In the context of project management, an effective project closing process is characterized by several key elements that ensure a smooth conclusion to a project. The acceptance of final deliverables is crucial, as it signifies that the project has met its objectives and that stakeholders are satisfied with the end results. Stakeholder sign-off is also essential, as it formalizes the acceptance of project outputs and signifies that the project's goals have been achieved, thereby minimizing any ambiguity or future disputes.

Documentation and lessons learned are vital components, as they provide insights and reflections on what worked well and what could be improved in future projects. This knowledge transfer is beneficial for ongoing improvement in project management practices.

In contrast, team building sessions are not specifically a part of the project closing process. While they can have value in enhancing team dynamics and morale, they do not directly contribute to the formal closure of project activities or the acceptance of project outputs. Therefore, this choice does not align with the fundamental objectives of the project closing phase, which focuses on completion, final deliverables, documentation, and securing consensus from stakeholders.