SAP Message BP253 - Functional area not possible on revenues side

Diagnosis
You are transferring revenues increasing the budget from a revenues FMaccount assignment with a defined functional area. In this release, youcan only work with revenues increasing the budget, if you are workingwithout a functional area on the revenues side (sender). However, onthe expenditures side (receiver), you can work with a functional area.
System Response
Procedure
Do not enter a functional area for the revenues FM account assignment.