Billing service order on WBS element

Hi,

I have created that post because I have a question regarding service order billing for a WBS element.

I have assigned some costs (components issues, labor...) to this servive order, and now I want to bill the actual costs to my Customer.

For that I use the T-code DP90. For each item in the sales document (Debit memo) I would like retrieve the WBS element.

Is it possible to do that in standard ? (rules copy...). I need to assign each item to a WBS element. Because during invoicing process I want to assign the revenus amont to WBS element.

Thanks for your help !

Regards

Corentin