Diagnosis
You want to allocate the BOM to plant &V1&. The BOM contains an item inwhich distribution key &V1& was entered under General data. As thisdistribution key is not defined in plant &V2&, you cannot allocate theBOM to plant &V2&.

Procedure
If you want to allocate the BOM to plant &V2&, you have to maintaindistribution key &V1& for the material.