Dimensions that don't exist yet

I need to dimensionalize a report in Anaplan by Regions we currently don't use. They aren't in Anaplan at all. We have the accounts we need but the Regions in Anaplan are different that the Regions needed for this report. I know I can create the Regions but the only issue is that I do not have the data needed to input the data at the lowest level. When I create the module with the needed regions the lowest level is the only level I can add data. I do not not have the data for the lowest level. See attached

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