Getting this when trying to plan a floor in a house, yet I'm holding the writ. (above and below, floor openings also, and wall plans) NB I had been traded the writ today to test this, the original planner / owner of the house was getting this error so I was confirming So I went up to the 3rd floor of another house I hold the writ for, which I planned, finalised and had been holding the writ for over a month. I was able to remove a wall plan, and when I tried to add a new one I got this error : We're all citizens on this deed. It's quite possibly related to the whole PMK thing.