I deleted the Schedule C I created and make a new one by manually input all information again. That solved the problem and electronic tax return was done proper...
Hmm. I think that solves the problem and I was thinking about that. However, if I do that, I will lose all information I have already input to Turbotax, such as...
Thank you for your advice. Then, I need to reduce the same amount of travel expense, but there is no such place to change the value of the travel expense for so...