Maintaining MRP Data 
You can see the BOM in the item overview.
- Mark the item for which you want to maintain MRP data.
- Click
.
The Change Material BOM screen appears: Item: All Data.
- Enter values in the tab page Basic Data for one or more of the following fields:
- Lead-time offset
- Operation lead-time offset
- Distribution key
- Explosion types
- Special procurement
- Save your BOM.