BOM Explosion 
Use
You use this function to gain an overview of a multi-level BOM for a sales order item.
Features
You can display a multi-level BOM for a sales order item in the following ways:
As a list sub-divided by assemblies
As a hierarchically structured list
As an overview of the quantities of all parts required to assemble a product
Note
When the system explodes a multi-level BOM for a sales order item, it ignores any detached order assemblies . These are order assemblies, which you have not yet inserted into the multi-level BOM.
End of the note.