MD02 - Run MRP Single item Multi level

MRP reads the requirement from:

• Material Master View
• Purchasing
• MRP 1 and 2
• Work Scheduling
• Sales Order
• Planned Independent Requirement
• BOM
• Routing

Points to note:-
If you have just changed the BOM and want to have the latest update.
Execute with Planning Mode 2 - BOM is re-exploded

When you found that the MRP did not automatically Create the Purchase Requisitions for in-house production.
Execute with Planning Mode 3 - Delete planning dates.

MRP can easily re-create Purchase Requistions and Planned Orders based on the latest requirement changes. Therefore, it is allright to execute with Planning Mode 3.

BOM - Do not built a BOM with a Material Type ROH Level 1 and Level 2, as MRP will not consider the requirement for Level 2 since it is a Raw Material. (no additional process required).

Level 1 ROH

...Level 2 ROH