Diagnosis
A vendor category (internal/external vendor) that differs from thevendor category of the reference plant was found for plant &V4&,material &V2& in unit of measure &V3&.

System Response
Price activation at plant group level may lead to incorrect results forplant group &V1&.

Procedure
You can activate prices at plant level by changing the price activationtype of plant group &V1&. To do this, change the price activation typeindicator to "Plant" in the plant group overview.