Diagnosis
You want to edit a batch of material &V1&. Several batches havebeen classified for this material. To prevent the batches of thismaterial from being assigned to different classes, the system lockedone of the classified batches. This batch &V3& is currentlybeing edited in a different session in plant &V2&.

Procedure
Finish editing batch &V3& of material &V1& in plant&V2& in one of the parallel seesions.