Hi George, the thing is tat the only option I have to select is CUSTOM. (This is happening in this particular file only, in other files I have by default REFERRED DRAWING selected )
Hi Erika, did you attached a screen shot? Because I don't see any.
I think you need to change with Marker Reference to: from The selected viewpoint to The selected drawing. Your marker is referencing a viewpoint which cannot be on a layout (hence no reference IDs), you need to link the marker to a View that has been placed (or can be placed) on a layout. This is the difference between the Project Map and the View Map in the Navigator.