License alarms begin at 30 days until expiration and the alarm level varies based on the number of days until the actual expiration data. Here is the breakdown:
Days to
Expiration Alarm level
30 to 22 Informational
21 to 15 Warning
14 to 8 Major
7 to 0 Critical
The license message received will look something like: "<probe name> license will expire in <number> days". It is not possible to stop these alarms without installing a new license, but it is possible to create a nas probe Auto Operator which makes them invisible or closes them right away.