2536201 - FATAL ERROR: Unkown macro 'DIR_EXE_ROOT' nargs -1

SUM (Software Update Manager) stops with the error as below in the Check roadmap:

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The 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:

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ENV:

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FATAL ERROR: Unkown macro 'DIR_EXE_ROOT' nargs -1
EXEC> Process with PID xxxx terminated with status 20 at 2017xxxx!

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SAP systems based on Netweaver ABAP

Software Update Manager 2.0

UNIX operating system

upgrade, PREP_GENCHECKS, EHP, Netweaver 7.0x, directory, resides, SAPupConsole, SAPup , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem