SAP Message QC028 - Class characteristic &1 cannot be linked to a master inspection char.

Diagnosis
The class characteristic &V1& cannot be linked to a master inspectioncharacteristic.
Only characteristics of a certain type can be used in a link between aclass characteristic and a master inspection characteristic. Type &V2&is not one of the types that can be used for the link.

System Response
The system cannot read any inspection specifications or inspectionresults for this characteristic that originated from a qualityinspection.