Routine or exit in modifying return order in reference to an invoice...

Question

Hello Experts,
Is there a routine(inside VOFM) or user-exit to modify the values being passed
from the original invoice document to the return order being created. Presently,
we are having a problem when the original invoice has a rebate condition and when we
create multiple line items with the same material in the return order, the succeeding
line items references its rebate discount in the wrong material in the invoice document.
Example:
Original Sales Invoice 3010002390
Line Item No.     SKU          Quantity     Total Rebate Discount          Per Unit Rebate Discount
10          100315          10               128.07                    12.81
20          106666          10               128.07                    12.81
30          100338          10               243.86                    24.39
Return Order 1120000402  (repeatedly created with reference to the same sales invoice number)
20          106666          1               12.81                    12.81
30          106666          1               24.39                    24.39
For Return Order line 30, it should have picked the price 12.81 instead it picked 24.39,
which is the same line item with the original sales invoice

Answer 1

How do you create the return orders?
From your example it looks like there is an error somewhere in the custom code. Either a variable is not cleaned up or an internal table is read, then manipulated and the previous record is not restored in the memory, etc. Also the program might be looking at the line number (POSNR) without considering the material number. Or, if you use a custom program to create the returns, the problem might be there.
Take a look at the configuration of Copy Control. In SPRO, go to Sales & Distribution -> Sales -> Sales Documents -> Maintain Copy Control for Sales Documents -> Copying Control: Billing Document to Sales Document. Then find you document type combination (could be target = RE, source = F2) and double-click on it. There you will see the routines (VOFM) that are assigned to the copy control. Also check the config for Items and Schedule Lines (see the lefthand window there). There could be something different attached to each item type.
Also check if there is anything in the pricing user exits, you'll find a list here:
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/erplo/copyofSDUserexits
Good luck!