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SAP Knowledge Base Article - PreviewSymptom
Running an upgrade with SUM you are stopped in the phase: PREP_EXTENSION/UNINSTALL_PREPARE
Inside UNINSTPREP.LOG, you see:
1EETQ399 Last error code set is: Internal Error in function module SPDA_PREPARE_UNINSTALLATIONS: No deletion
1EETQ399Xpackage created.
Inside SPDA_UNINSTPREP.LOG, you will find one or some lines similar to:
3WETN510 Unknown software component '"xxxxxxxx"'
3WETN510 Unknown software component '"xxxxxxxx"'
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Environment
SAP Netweaver system
Product
SAP NetWeaver all versions
Keywords
KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem
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