When opening the Cleared Alarm History in Spectrum OneClick for a model, or when using "Show Events" in Alarm Notifier, the following shows:
An event occurred for model '' of type '' for which no event format file exists.
The event being used is not logged in the DDM/mysql db.
Enable logging of the event.
Launch the Event Configuration Gui - Tools - Utilities - Event Configuration
Filter for the event causing the error.
Select the Event Options tab then select the "Store Event in Historical Database":
Save the change and the next time an alarm is cleared it will show the correct text from the event.