2779665 - Error in START_SHDI_PREPUT: "Listen failed on port/service XXXXX"

Unable to start shadow instance for SUM upgrade. Below error occurs:

SAPupConsole.log

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Severe error(s) occurred in phase MAIN_SHDPREPUT/START_SHDI_PREPUT!

Last error code set:
Shadow instance
couldn't be started, check 'STARTSSC.LOG' and 'DEVTRACE.LOG': Process ..\SUM\abap\exe/sapcontrol.exe exited with 2, see '..\SUM\abap\log\SAPup.ECO' for details

To analyze errors during the start of the shadow instance, check the
'STARTSSC.LOG' and 'DEVTRACE.LOG' files in directory '..\SUM\abap\log'.

Repeat the phase until the shadow instance is started and you can log on to
instance number '01'.

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dev_enqsrv_new

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** ERROR => Listen failed on port/service XXXXX[enservglob.c 1716]
** ERROR => Another application or Enqueue server already uses this port => EXIT [enservglob.c 1717]

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SAP ERP 6.0

START_SHDI_PREPUT, STARTSSC, DEVTRACE,  Listen failed on port/service, Another application or Enqueue server already uses this port , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , BC-CST-STS , Startup Service , Problem