Symptom
based on the documentation when you configure PTP alarm parent change just will be available on Boundary Mode as you can see below:
However, on the lab once I configured on as a transparent mode I am still seeing the alarm as you can see below:
IE9321#show facility-alarm status
Source Severity Description Relay Time
Switch MINOR 32 PTP Clock Parent change NONE Mar 31 2011 04:13:37
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/cisco_ie9300/software/17_7/precision-time-protocol-config-ie93xx/m-ptp.html#Cisco_Concept.dita_e8e2e910-e7bd-41f0-bf3e-3c93d0f13304
Conditions
PTP Transparent clock mode
Workaround
It has not been identified