In a scenario, for example, where you have created a custom event code and set in the events alarm options "Generate a Unique Alarm for Each Event " you may see over time a number of alarms being generated that are not required if there is no clear event created to also remove these alarms.
When setting the "Generate a Unique Alarm for Each Event" option instead of just seeing the occurrence count increase on the first alarm raised you will have a new separate alarm raised in OneClick every time the event that generates this alarm is created.
To remove the unwanted, accumulated alarms you can add a temporary clear event via Event Configuration to clear the alarms.
Note: you can also do this if you already have one defined but want to mark this as special clearing, using a temporary event code to do it.
The following expands upon the steps given in Broadcom TechDocs : CA Spectrum 10.4.1 - About Configuring Events