All the messages coming out of ZMSSTART have the message ID of BPXM023I. We prefer to have a unique message ID for the "startup complete" message and the error messages as in the below example.
.22.53.49 S0788911 BPXM023I (ZMSSTC) CAMS0001I Message Service Server startup complete.
.06.33.46 S0788911 BPXM023I (ZMSSTC) 714
. 714 JVMDUMP039I Processing dump event "systhrow", detail "java/lang/OutOfM
. 714 emoryError" at 2020/05/12 10:33:46 - please wait.
. 714
Release : 15.0
Component : CCS MESSAGE SERVICE
Documentation: MAINFRAME OPERATIONAL INTELLIGENCE (MOI)
Section: Integrate with Third-Party Applications to Automate z/OS Write-to-Operator (WTO) Messages