During upgrade, SUM prompts to start ASU Toolbox, which looks like below.
When executing t-code /ASU/UPGRADE, system prompts "this function is not possible".
SAP NetWeaver 7.3
/asu/upgrade, this function is not possible, /usr/sap/put, ASU.XML, content file , KBA , BC-UPG-PRP , Upgrade Preparation , Problem
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