3039196 - SUM Error : Username is 'abcadm', but was 'defadm' while launching SUM in scenario: SUM DMO with system move

While trying to start Software Update Manager (SUM) with option "DMO with system move" on target host, fails with error:

Tool start requiredThe tool is not running.
Press the "Next" button to start the SUM ABAP process.
Choose Exit in More menu to end the SUM ABAP server process ("SAPup")
Start options:Start options:Output of failed tool execution:
..

EXECUTING /usr/sap/<SID>/SUM/abap/bin/SAPup rootdir=/usr/sap/<SID>/SUM/abap rootdir=/usr/sap/<SID>/SUM/abap guiconnect=127.0.0.1
FATAL ERROR: Username is 'abcadm', but was 'defadm' before
EXEC>Process with PID ****** terminated with status 20 at 20210323102506!

• Software Update Manager (SUM) DMO with system move

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