Where a device's software cannot be updated, the manufacturer publishes, in a clear and accessible way, the reason there are no updates and how long and by what means replacement hardware will be supported. Status in Table B.1: R C (3) (recommendation, a should provision; conditional on the device's software components not being updatable).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.