In demand management, you manually enter planned independent requirements with the quantities and dates required for the individual finished products (filled goods). The planned independent requirements are consumed by the incoming sales order later during net planning. You then execute MRP for each finished product. At each production level, the system generates planned orders or purchases requisitions for the in-house-produced materials (the production of bulk materials and related semi-finished products) and for externally procured materials (raw materials and packaging).