Diagnosis
You want to process the batch &V1& of material &V2& inplant &V3&. This batch is the only batch of material &V2&that has been classified. Batch &V2&, which is not classified,is currently being processed in another session. To prevent a differentclass from being assigned to material &V2& than that which isassigned to batch &V1& of material &V2&, you cannotprocess the batch while the material is being processed.

Procedure
Finish processing material &V2& in a parallel session.