This documents explains the alarm reported by PTX10002-36QDD devices with or without QoS configurations.

> show system alarms no-forwarding

1 alarms currently active

Alarm time        Class Description

2025-07-11 06:00:00 UTC Minor QoS License(289) usage requires a license

> show system license 

13:21:16 § License usage: 

13:21:16 §                 Licensed   Licensed  Licensed

13:21:16 §                  Feature   Feature   Feature

13:21:16 §  Feature name            used  installed   needed  Expiry

<.>

13:21:16 §  qos-license              1      0      1  invalid

This is a minor alarm "QoS License(289) usage requires a license" observed on the device due to the use of pre-existing license related to class-of-service to enable Hierarchical Queueing (HQoS) feature on the affected device. This minor alarm gets raised due to the presence of default class of service configurations on the affected device, even when HQoS is not configured on the device.

As a fix, a new license specific to HQoS is introduced, which gets enforced for "set interfaces <ifd-name> hierarchical-scheduler" configuration stanza, and this new license does not trigger the minor alarm for the presence of default class of service configurations on the affected platform without HQoS configurations.

There is no traffic impact due to this issue.

Issue is reported and fixed in PR: 1832769