Error Msg: Costing Item #0001 is not assigned to cost component

Hi Experts,

When we were doing T.Code: CK11N ( cost estimate with Quantity structures) the following error msg is displayed.

"Error Msg: Costing Item #0001 is not assigned to cost component"

could you tell me how I can move forward.... Thanks in Advance for your valuable solution...

Regards,

YK