Please provide confirmation that significant change requests (SCR) being submitted will be based on the current revision level of the system.

Cloud service providers (CSPs) will be implementing Rev. 5 controls based on the plans created from their Rev. 4 to Rev. 5 gap analysis. SCRs will be based on Rev. 4 or Rev. 5 as determined by those CSP-specific implementation plans, and as coordinated with your agency authorizing official (AO).