When an Object is finished, and have the status "Hand in description" it can't be edited and you will get the message "Access denied" if you try to open it.
An Object is locked when it has the status "Hand in description", because it has to be quality checked and the data has to be looked through and approved. That's why it's not able to edit the object while an adviser looks it through.
If you accidentally changed the status to "Hand in description" before it was actually done, you need to contact an administrator of the handover to get it unlocked.
If you want to view the entered data, you can click "Print" in the blue bar in the bottom of the overview to get a report in PDF.