Depot repair -Cost of repair to be identified at child item and not parent level

Hi Gurus

I have the following scenario.

We use best practices of SAP for depot repair.

I give below a simple example for explaining depot repair process followed by us:

At sales order (Repair Order) say 40000

10000  D1_War

10100 Mat X (repair mat received)

10200 D1_War (Service Order 100 generated)

10300 Mat X (repair mat repaired) (This line item is generated by the system automatically when TECO is done at service order)

We issue mat, lab, OH to Service Ord 100 (generated out of sales order above)

Now settle service order 100 to sales order 40000

Here all costs incurred at service order are settled to sales order 40000 and line item 10000 (above)

No cost is collected against Mat X (mentioned above).

Requirement:

Line item of service order 100 shows

5000-Mat consum   30$

9100-lab consump   10$

9200-OH consump     5$

In the above scenario is it possible to show Mat X (child item in the sales order) .

Standard report of KOB1 or sales order line item do not show this material.

Here since the settlement takes at

Sales Order 40000

Line Item 10000 -This is parent item

It is not possible to identify the cost at the repair material (child item)

I need suggestion to address this issue

Thanks

Revathi