Why do we perform all the MRP processing for one level before going to the next-lower level?

Performing all the Material Requirements Planning (MRP) processing for one level before moving to the next-lower level ensures that the planning is accurate and comprehensive. This sequential approach allows for the complete calculation of material and component needs at each level, preventing potential shortages or excess inventory. It also helps maintain the integrity of the bill of materials and ensures that dependencies among components are respected, ultimately leading to more efficient production scheduling and resource allocation.