In my cardwall, some backog items show an error "The backlog item <my item> cannot be displayed since the column matchings have not be defined between Requests and this planning"

This happens when I have no tasks linked to this items and no column defined to determined the item status. I dont want to defined a status to this backlog item as I will add children tasks later.

As soon as I add a children task to my backlog item, it shows up correctly.

See attached screenshot.