Hi Andreas,
The User WCS-021 created a new node 41001 which it means that the user added the another S_TCODE object in addition to the previous one whose log is 41000 and delete the old one 41000.
That why two logs are visible for the same object.If we added the authorization object which is already added to the role, a new log is created under the auth object which means two logs are created for the same object.
Regards,
Ramesh Kumar.