The organization should analyse the continuity requirements its supply chain must meet, as the business impact analysis produces them (4.2.2 and the introduction): the BIA (ISO/TS 22317) establishes how critical each supplier is and how quickly its supply must be restored, and priority suppliers are those behind prioritized activities whose failure would most harm the organization's own delivery; on the ISO 22301:2019 basis the analysis identifies the resources and dependencies each prioritized activity needs, the time frames within which supply must resume, and the resulting priorities.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.