BW objects (InfoCubes, InfoObjects, and so on) cannot be processed.The RSO 840 message is issued:"The upgrade is already running - you are not able to change objects". Other terms
However, processing of the objects is necessary because they must be active for the conversion of the internal values (note 447341).
RSO840, transport system, locked by transport system, upgrade Reason and Prerequisites
This is a program error which prevents BW objects from being processed in the prepare phase of the upgrade.This check is provided in the prepare phase (tool import) with the upgrade. Solution
This error only occurs when you upgrade from 2.x to 3.0A or 3.1C.With an upgrade from 2.0 to 3.0B, the program is already corrected in the tool export.
The error does not occur if the Support Package level of the source system is at least Support Package 20 for 2.0B or Support Package 12 for 2.1C. --
https://service.sap.com/sap/support/notes/458024 (SAP Service marketplace login required)