Assigned alarms become unassigned after a while

Products

• CA Unified Infrastructure Management On-Premise (Nimsoft / UIM)

Issue/Introduction

Issue happening on the Operator Console
Some alarms  assigned to a user - the alarm appears "assigned", in the "assigned to" column, but after a while, the "assigned" status disappears - meaning that the alarm would no longer be assigned.

 

Cause

Existing NAS rule to unassign such alarm

Environment

Release : Any release

Component : NAS

Resolution

Customer had NAS rule that was doing the unassign.

To check this, In IM select the open alarm > right click >transaction history:

Example, check assigned to/assigned by: