In APM Mainframe Integration, After starting APM Bridge the process went down with the below messages and it doesn't stay up anymore:
11.04.55 STC81782 z/OS APM Bridge is disconnected from CCS Data Mover due to APM Kafka unavailability
12.05.26 STC81782 z/OS APM Bridge is stopping due to connection issues with APM Kafka
On Prem APM 23.12
Environment issue
Restarting the system resolved the issue.