How do I adjust the SLE thresholds for Application Health or Application Services sub-classifier?

First review documentation:

https://www.juniper.net/documentation/us/en/software/mist/mist-wan/shared-content/topics/concept/sle-wan-application-health.html

The Application Health SLE thresholds are not configurable. For curated application ( i.e. applications mentioned in https://api.mistsys.com/api/v1/const/applications) thresholds are static, and for rest of the apps are learned dynamically.

For slow_application, we use time_to_first_packet for the applications mentioned

threshold data is not available to an API at this time

The dynamic applications time_to_first_packet and rrt are baselined across the Mist universe data for each application. These will be learned each day with a rolling window of 2 weeks. Thresholds are derived from the baseline values and we usually consider either 90th percentile or 2 sigma standard deviation for deriving these thresholds.