3645292 - Error in SUM phase PREP_INPUT_CHECK/DETMAINMODE : Stack XML must contain dvd identification

• Upgrade of a system using Software Update Manager (SUM) stops in the PREP_INPUT_CHECK/DETMAINMODE phase.
• The error message states: "Stack XML '<stack.xml>' must contain dvd identification."
  
  DETAINMODE.LOG:
  
  1 ETQ399 Checking for possible operation modes.
  2 ETQ399 Mode 'EXPORT' (upgrade) is possible.
  2 ETQ399 Mode 'CLONE' (EHPI) is possible with kernel release '753'.
  2 ETQ399 Mode 'TRANSPORT' (SPAM) is possible with kernel release '753'.
  1 ETQ399 Checking operation mode from stack XML '/usr/sap/SUM/<stack.xml>'.
  4 ETQ399 Found SAP Kernel as software component 'KRNL64UC' with version '7.54'.
  1EETQ399 Last generated error message is: Stack XML '/usr/sap/SUM/<stack.xml>'
  1EETQ399Xmust contain dvd identification
  1EETQ399XIf this stack XML only contains components which will be deleted reset this SUM procedure and use
  1EETQ399XSAINT instead.

• Software Update Manager (SUM)
• SAP NetWeaver AS ABAP

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