Diagnosis
You want to allocate the BOM to plant &V2&. The BOM contains a KANBANmaterial (item &V3&), for which supply area &V1& is defined.

System Response
The system checks which supply areas are defined in plant &V2&(Customizing "KANBAN").

Procedure
Supply area &V1& is not defined in plant &V2&, you cannot allocate theBOM to plant &V2&.