In the scenario where a key stakeholder is not approving project deliverables, it is crucial for the project manager to directly engage with the stakeholder to comprehend the reasons behind the delays. This aligns with the PMI's guidance on stakeholder engagement, which suggests that understanding stakeholders' concerns and expectations is essential for project success1. By meeting with the stakeholder, the project manager can clarify any misunderstandings, align expectations, and work collaboratively to address any issues impacting the approval of deliverables. This proactive approach is recommended over merely documenting the issue or seeking influence from others without first attempting to resolve the matter directly with the stakeholder involved23.
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PMI PMP: How to Handle a New Stakeholder's Complaint on Project Deliverables1.
Planning effective stakeholder management strategies to do the same thing! | PMI2.
Engaging Stakeholders for Project Success | PMI3.