Diagnosis
You chose notification type &V1& in the basic data for the scenario.
Notification type &V1& was assigned to the notification type for taskcatalog &V2& in the settings.
Combinations of code group and code are only allowed if they werecreated in catalog &V2&, and if they are allowed in the catalog profilefor the notification type.
The combination of code group &V3& and code &V4& is not valid.

Procedure
Choose a valid combination, using the F4 help in the "Key" field".