Diagnosis
You attempted to create the person &v1& in the role &v2& for which thefield Witness for person affected is blank.
The same combination of person key and role already exists. Thiscombination must be unique if no witness entry exists.

Procedure
Change the person key or the role of the person so that no duplicateentries are created. It is also possible to make an entry in theWitness for person affected field.