SAP Message XC080 - MRP area &1 contains more than one storage location

Diagnosis
You have selected an MRP area that contains more than one storagelocation. MRP areas with several storage locations are only supportedas of SAP APO 4.0. The system you selected has release &V2&.

System Response
This MRP area is no longer taken into account.

Procedure
Select another MRP area or restrict the number of storage locationsassigned to one storage location (receipt storage location).