2673550 - xscontroller does not start due to invalid FQDN

After installation, the xscontroller (hdbxscontroller process) is not able to start.

• The following error can be found in xscontroller_<n>.log

com.sap.xs2rt.controller.ControllerExceptions$ControllerStartUpException: Could not startup the controller components: The controller is not available via the platform router at https://<subdomain>.<domain>:30030. The cause for this could be port 30030 is unavailable, wrong proxy settings, an unreachable or incorrect domain or others. Please check the SAP WebDispatcher logs in /hana/shared/<SID>/xs/controller_data/controller/router/webdispatcher/logs and the controller log.
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Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

• A subdomain or the domain does not start with a letter. Example: 1hanaxsa.mydomain.com. This can happen in public cloud infrastructures as they might assign random generated strings to hosts.

SAP HANA Extended Application Services, Advanced Model

process, hdbxscontroller, HDB, XS Controlle,r not running, hdblcm, unable to find valid certification path to requested target, FQDN, DNS, host, hostname, domain , KBA , BC-XS-RT , XS Advanced Runtime / XS Controller , Problem