Nodes like this https://www.openstreetmap.org/node/287558718 do not describe any features that exist in real life, they just describe the shape of other objects. Such nodes should not have an operator tag.

You might also want to check objects such as
https://www.openstreetmap.org/way/1376728533,  and make sure you're not adding this tag to public roads incorrectly. 

When you add the operator tag you're essentially stating that they control that object and have the ability to close it down, and that they are responsible for it. 

Best regards,
Taya Snijder



