Multifaciliy MRP generation -consolidation method

Hi

We are working in E9.1 and need some information on Multi facility MRP setups. The business scenario is like this

B/P 'A'- both manufacturing and sales branch for finished goods.After completing the WO, the FGs will be moved to B/P " B, C, D' based on ware house space availability. It will be then transfered periodically to B/P "A" to meet all SO demands. Note that sales is happening only at B/P 'A'.

B/P - 'B', 'C', &'D' - supply branch plants for both FGs and raw materials. The forecasted records are uploaded against B/P 'A'.