2820623 - SUM phase INSTALL-TEMPORARY-LICENSE phase fails with return code 13

During the upgrade of a SAP NetWeaver AS Java system, the INSTALL-TEMPORARY-LICENSE phase fails with return code 13:

Jul 1, 2019 10:37:15 AM [Error ]: The following problem has occurred during step execution: com.sap.sdt.util.diag.DiagException: Error while executing Task with input file ExecuteTasks.xml and task INSTALL_TEMP_LICENSE.
Error while processing the result.
Cannot install temporary license on the AS Java Server; for more information
see D:\usr\sap\SUM\sdt\log\SUM\INSTALL_TEMP_LICENSE*.*. Could not execute 'D:\usr\sap\SUM\jvm6\jre\bin\java.exe -cp D:\usr\sap\SUM\sdt\lib/sap.com~tc~bl~offline_launcher~impl.jar;. com.sap.engine.offline.OfflineToolStart com.sap.engine.tools.offlinelikeyinst.InstallFirstTempLicense
D:\usr\sap\SUM\sdt\data\install/lib;D:/usr/sap/PID/SYS/global/security/lib;D:/usr/sap/SUM/sdt/data/jdbc/new/sqljdbc4.jar D:\usr\sap\SUM\sdt\config/InstallTempLicense.properties', return code '13'. Check if process output file(s) 'D:\usr\sap\SUM\sdt\log\SUM/INSTALL_TEMP_LICENSETaskExecutorService.OUT', 'D:\usr\sap\SUM\sdt\log\SUM/INSTALL_TEMP_LICENSETaskExecutorService.ERR' have been created.

[INSTALL_TEMP_LICENSETaskExecutorService_01.ERR]

java.net.ConnectException: Connection refused: connect (local port XXXXX to address 0.0.0.0, remote port 39XX to address 10.0.0.1 (host.net))
Could not get the hardware key.
java.net.ConnectException: Connection refused: connect (local port XXXXX to address 0.0.0.0, remote port 39XX to address 10.0.0.1 (host.net))
Could not get the System ID (SID).

In trace.installOfflineLicense file under path <SUM folder>\SUM\sdt\data\install. there may be errors like:

Error:
No matching license keys found.No matching license keys found.No
matching license keys found.No matching license keys found.No matching
license keys found.No matching license keys found.No matching license
keys found.No matching license keys found.
A permanent license key for "J2EE-Engine_MSS" already existed in the system. You can't install another temporary license key for "J2EE-Engine_MSS".
InstallFirstTempLicense: end showErrorMessage()
InstallFirstTempLicense: begin isLicenseAlreadyInstalled()
InstallFirstTempLicense: end isLicenseAlreadyInstalled()

SAP NetWeaver AS Java

License, hang , KBA , BC-UPG-TLS-TLJ , Upgrade tools for Java , Problem