RUN Time Error

Hi Expert m doing FB01 Transaction while doing transaction getting error

No operating concern has been assigned to controlling area 1000

Message no. KE300

wen i go activate operating Concern system gives RUN Time Error see the screen shot

Sir/Madam kindly request to you please resolve this issues ASAP.

yr quick action will be highly appreciated.

Kind reagards

pranav kumar Gupta

SAP FICO Consultant.