When KF value only provided at higher level and not at more detailed level

Question

Dear Experts
I have a multiprovider consisting 2 DSOs:
1.  DSO for price.
Eg. 
Char-A__Char-sub1___Char-sub2___KF_PRICE
AAAA__ AA11________AA22________$10
AAAA__AA11_________AA23_______ $17
As shown above,  AAAA is made up of 2 sub-items AA22 and AA23 , each priced differently.
2.  DSO for Qty
Char-A____KF_QTY
AAAA_____200
As shown above, this DSO for quantity does not have sub-item qty. What should be the quantities for each sub-item? Its always exactly the same as the Qty at Char-A level . Eg.  200 pieces of AAAA is made up of 200 pieces of AA22 and AA23.  
The user wants to drilldown to sub-item levels to see Price X Qty.
I tested, when not drilled down to these levels, the display and figures are correct.
But when drilled down , the report will have additional line for each record due to the fact that the Qty is not at sub-item level.
So, qty will be shown in another line and the price will be on the line with the sub-item.
How can this situation be resolved using  BEx? Else, I would use staging to resolve this. But I am hoping BEx level can resolve it. If staging is used, I would need to copy the same qty to each sub-item for each record by adding qty field into Price DSO or union the 2 DSOs into 1 DSO. But I thought Multiprovider is already a Union?
Kindly could you provide me some advice, clues or opinion?
Thanks in advance.
My Best regards
Pascal

Answer 1

Hi,
This issue can be resolved by using constant selection
For step by step approach please refer the below pdf.
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/70dcd7b5-6a3d-2d10-c984-e835e37071a2?QuickLink=index&overridelayout=true
Hope it helps.
Regards,
AL