Diagnosis
In all method steps, selection 1 should never be empty. It must containat least one restriction for a characteristic. When performingtwo-sided elimination, the same applies to selection 2 in each methodstep.
In method &V1& and step &V2&, selection &V3& is not defined or empty.

System Response
Method definition has an error and cannot be saved.

Procedure
Check selection &V3& and fill it if necessary.