Why .dxf file cannot be imported into section property calculator?

Answer:

Kindly note,

1) While importing the autocad .dxf file in SPC the unit settings are to be consistent.
2) Also make sure there are no polylines, i.e explode the lines in autocad before importing.

In SPC if I set the unit system for length in metres am able to import the autocad .dxf (units in m ) file successfully