At the step 'Define CA Introscope' of Infrastructure Preparation, it is not possible to remove the Introscope EM with below messages:
Use context menus in Expert Mode to manage references to this EM
This enterprise manager is used by technical system <SIDs of managed systems>
Solution Manager 7.2
Delete, Wily, Enterprise Manager, monitored system , KBA , SV-SMG-DIA-WLY-EMS , Enterprise Manager Setup , How To
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