In ASCP version 12.2.4, what sources can be used to load Demand Schedules other than Demantra?

The business is looking at tools outside of Oracle Demantra for Demand Planning and Analytics, but still considering ASCP for planning and execution in a rapidly changing environment. Can ASCP be loaded with Demand or Supply schedules from other than Oracle applications in the Options section to feed this data into ASCP planning? All other EBS data collected would remain. This would also need to capture multiple Organizations that are in the mix of the plan for both Demand (external data), Production Supply (possibly external data), and Supply (EBS internal data).

Looking for the best way to set up such a solution.