We have installed the release version 21.2.8 and are getting an error in the CAMM Logs for the context not able to be set.
I am pretty sure this has been happening in this environment since before we installed this latest release.
As of 21.2 all rest services on the Data Aggregator require authentication.
Release : 21.2
Component : Mediation Manager
You need to set the correct da_host, da_username and da_password in the CAMM GUI poll profile.