Stakeholders are the individuals, groups and organizations whose interests an AI system's decisions or activities can touch, or who can influence them, or who believe they are touched by them; trustworthiness is defined against their expectations, so identifying them, their assets and their values is the starting point for assessing what an AI system must verifiably meet.
This control maps to 113 controls across 26 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.