The 2 mile limitation has been removed in Revit 2011. The limit is now something more like 10 miles (16 km) from the drawing origin.
The ability of Revit to maintain accuracy while dealing with these large CAD imports has also been improved.
What Revit Wants
Why it is happen,when we link auto cad we use orgin to orgin right.So may be the cad drawing is away from origin.is that right? If any other reason please reply…..Thankyou