Diagnosis
You want to allocate the BOM to plant &V1&. The BOM contains an itemfor which purchasing organization &V1& was entered under Purchasingdata. As this purchasing organization is not defined in plant &V2&, youcannot allocate the BOM to plant &V2&.

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