Diagnosis
A storage location is defined in the material master as being plannedseparately. Additionally, the storage location is assigned to thematerial via an MRP area.
A storage location can, however, either only be defined as a storagelocation that is planned separately or it is assigned to a material asan MRP area.

Procedure
Change either the MRP indicator in the material master and thereforeyou redefine the storage location so that it is not planned separatelyor you delete the assignment of the material to the MRP area.