There are three inputs for stakeholder analysis.

Enterprise architecture is an input for stakeholder analysis that describes the organizational units that exist and their interactions with one another. It provides a holistic view of the organization’s structure, processes, systems, and goals, and how they are aligned and integrated. Enterprise architecture helps to identify the stakeholders who are involved in or affected by the business analysis activities and the solution.

References: The information is verified as per the BABOK® Guide and related IIBA resources, which outline the standards and practices for business analysis. The BABOK® Guide is a key resource for understanding business analysis inputs and outputs