Oklahoma non resident tax

I do not live in Oklahoma, I live in another state.  I have not worked or set foot in Oklahoma during 2020.  I do, however, have oil revenue that is generated from within the state of Oklahoma.  TT asks me to "enter the portion earned while a resident of Oklahoma" .... which is weird as I am filing a non-resident form.  TT doesn't give me any other choice than to tell what I earned when a "resident".   Suggestions?!  Any thoughts are appreciated.