Credit Memo Assignment in COPA

Dear SAP Experts,

I am serving in electronics company.we give incentives (Discounts) to our customer. The procedure is

we create credit memo with reference to material in SD and after checking of Memo ,credit note is posted. kindly note that these discounts are not quantity related but are incentives to increase the sales.

Now as we create credit note, in COPA, quntity used in credit memo as reference is deducted from actual quantity sold which is not desireable as we are only using material (quntity) for refernce purposes

please note that we have seperate number range and document types (sale order and billing type) for credit memos

kindly advice how to exclude these transaction from COPA reporting for accurate /real results

please reply urgently