Maple workflow error #73

Hi guys!

I make my models in Blender, modeling and unwraping aswel. Then I export model to 3ds max.

Despite nice unwraped models and equal texel density (tried to do this in different applications like blender and rizomUV) I always get this error
#73 which can be fixed ONLY by applying the UVWmap modifier. As you
understand the UVWmap cannot be applied to every model. Different applications and file formats with different texel density failed.

Any Ideas on what I am doing wrong?

error 73 is: UV in map channel 1 are not at real world map scale. UV size must match polygon size