Error adding new managed server (on a new virtual server):
<Aug 27, 2020 8:38:46 AM BRT> <Info> <Management> <BEA-141223> <The server name WLS_MS7 specified with -Dweblogic.Name does not exist. The configuration includes the following servers {AdminServer,WLS_MS1,WLS_MS2,WS_MS1,WS_MS2,WS_MS3,WS_MS3}.>
<Aug 27, 2020 8:38:46 AM BRT> <Critical> <WebLogicServer> <BEA-000362> <Server failed. Reason:There are 1 nested errors:
weblogic.management.ManagementException: [Management:141223]The server name WLS_MS7 specified with -Dweblogic.Name does not exist. The configuration includes the following servers {AdminServer,WLS_MS1,WLS_MS2,WS_MS1,WS_MS2,WS_MS3,WS_MS3}.
at weblogic.management.provider.internal.RuntimeAccessImpl.<init>(RuntimeAccessImpl.java:149)
at weblogic.management.provider.internal.RuntimeAccessService.start(RuntimeAccessService.java:41)
at weblogic.t3.srvr.ServerServicesManager.startService(ServerServicesManager.java:461)
at weblogic.t3.srvr.ServerServicesManager.startInStandbyState(ServerServicesManager.java:166)
at weblogic.t3.srvr.T3Srvr.initializeStandby(T3Srvr.java:882)
at weblogic.t3.srvr.T3Srvr.startup(T3Srvr.java:572)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:469)
at weblogic.Server.main(Server.java:71)<Aug 27, 2020 8:38:46 AM BRT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED>
<Aug 27, 2020 8:38:46 AM BRT> <Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down>
<Aug 27, 2020 8:38:46 AM BRT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN>
The support notes and some other results on websites refer to configuration problems, it was resolved by noting that the new managed server had a firewall block to connected the AdminServer.
After releasing the firewall, the new managed server is running.