MX devices licensing moved to Agile licensing. Alarms and nags to be raised only if any flex-only linecard is installed on the device.
Even if customer has pre-flex license(including device bundled license) too, alarms and logs to be raised.
Please refer to Release Notes: Junos OS Release 22.2R1.
https://www.juniper.net/documentation/us/en/software/junos/release-notes/22.2/junos-release-notes-22.2r1/topics/new-features/feature-descriptions/licensing.html
This KB describes why logs are generated and about JTAC's technical support.
Even though you see those license logs, the features that were previously used with the old license can continue to be used without any impact.
And customers can also receive technical support from JTAC.
09/07/2024: Initial edition.