Make the poor, sad program happy and enter the the basis! We have to learn to live with each other and put up with the foibles of our new friends. 

I had that issue as well. I went to line 23 and checked the box that said "standard mileage" and that got rid of the pink request for cost basis

The stupid update did that error.

As Greta said, most people are reporting to checking the box to 'force' the Standard Mileage Rate will get rid of the error.

Although in my opinion, it is ideal to have the Basis.  You'll need it for whenever the vehicle is disposed.

is the business a corporation or sole proprietor