Symptom
- Upgrade/update using SUM tool
- In phase DETMAINMODE the following error was reported
<DIR_SUM>/abap/log/SAPup_troubleticket.log:
1 ETQ399 Checking for unique operation mode.
1EETQ399 Last error code set is: No operation mode detected for this system.
Need to check the stack file (<path>/<stack_filename>.xml).
1EETQ204 Upgrade phase "DETMAINMODE" aborted with severe errors
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Environment
Systems running on NetWeaver 7.xx
Keywords
KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , SV-SMG-MAI , Maint. Optimzer replaced by Maintenance Planner: BC-UPG-MP , Problem
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