Got a package from DPD today. The package was succ...

Got a package from DPD today. The package was successfully delivered.
The problem was, nobody was home!
When I got there a short time later, the package was just on the doorstep. We have an open courtyard where everyone can get in and out. Anyone could have taken the package with them. Fortunately, that didn't happen.
But to claim to have delivered something and then simply put it in front of the door is not even possible.