Checking the entries in TRDIR table you find many entries where the user modifying the objects is SAP* (SAP star user)
SAP NetWeaver release independent
SAP* account, modifying programs, customer behalf, star , KBA , BC-DWB-UTL-BRD , Data Browser , BC-DWB-TOO , Workbench Tools: Editors, Painter, Modeler , BC-DWB-UTL , Workbench Utilities , How To
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