Foreign currency valuation

Hi All

We are facing one issue that at the time of foreign currency valuation through FAGL_FC_VAL system is throwing error that acount requires a cost object. Generally cost object is picked from original document.

But my question is how I can check the original document of valuation line item or in other words when i m executing batch manually system is trowing error in 1 line item so how i can check the original line item of that to be valuated line item.

Reply is appreciable.

Thanks