Regarding the activate the profitability analysis

Hi,

This is sumanalluri sap fi/co consultant.I am hitting an error while doing the profitcenter accounting.when i want to to do the transfers of material stock balenses ,the system is asking accounting based pca is not active in the year 2007 in controlling area.But in the controlling area it is not allowing me to keep profitability analysis in active status. Even when i select change option also it is not allowing to change.By default it is kept as inactive .How can i rectify this error.Please do the needfull.

Regards,

suma