Unable to locate Co data for co account assignment in EK02

Hi,

While creating entries in EK02 we are getting below error:-

"The system was unable to locate CO data for CO account assignment key XXXX". We are using profit center and segment reporting " and have maintained the necessary settings in "Define CO Account Assignment Keys" against company code , segment and profit center and also maintained cost element settings.

Any solution to resolve this error.

Thanks and Regards

Kumar