OKB9 Settings issue - for PA Segment and Valuation Area together

Hi,

IN OKB9, I wan to use PA segment check box and Account Assignment Details as '1'.

System is not allowing to do this.

But wit Valuation Area mandatory, we have assigned for different valuation area to different cost centers.

And the transaction to flow to COPA, I want to select PA segment check box.

System is not allowing me to do that, giving message error as 'Detailed assignments are not allowed to profitability segments'.

How to post this to COPA.?

Regards

Kami