Error Code KI235 - Account requires an assignment to CO Object

Dear All,

I am facing one problem. I am making good receipt without PO via Movement Type 501. We are hitting GAIN/LOSS MATIRIALS account, which does not require to hit the cost center. I have created Cost Element with Category 1. I have maintained that Cost Element in OKB9 and ticked Prof. Segment Indicator. I have also maintained that cost element in FI transfer structure.

I am not getting why i am facing such problem though i have assigned this element in Profitability Segment.

Seeking for help.

Thanks,

Jigar