Diagnosis
You have assigned participation ID &v1& to the settlement unit in aperiod that is not valid for this participation ID.
Participation ID &v1& is assigned to the settlement unit either beforeV2 or still after v3. this is implied by the end of the settlementunit or the start date of the next assignment.

System Response
The system does not accept this assignment. The settlement unit mustalways be assigned a (valid) participation ID.

Procedure
Either change the validity period of the participation ID or assign adifferent participation ID to the settlement unit for the period inwhich participation ID &v1& is not valid.