Description
The input linked Revit files must be georeferenced and have an associated .wld3 file and .prj file. One or both files are missing for the selected linked Revit files.
Solution
If necessary, georeference the linked Revit files or update the .prj and .wld3 files for the host model to be universal projection and universal world, respectively, files that apply to all the BIM files in the same folder.