Error in RE contract

Hello Experts,

We are facing an eror in RE contract profit center determination.

We have reviewed the earlier posts on profit center determination, however for us we are unable to save the contract.

While creating contract:

Contract level no profit center

RU1 : PC1

RU2 : PC 2

Cannot save contract due to error. Error: RETMFI019. Unable to determine exact profit center.

Suggestions please.

Regards

Veena