ITIN -- not applicable. Why do I need one?

Hi, folks.  New to this forum.

I am an American living in Japan.  I tried to file my US taxes, but was rejected because I don't have an ITIN for my wife.

My wife is Japanese, lives and works in Japan, pays taxes in Japan and has no reason to have an ITIN.  Why can I not file using Turbo Tax without an ITIN for her?

 

TIA,

Mukatsuku