Car and Truck Expenses

During the Turbo Tax interview process for Business Income and Expenses, and the question for entering your mileage.  I selected,  "I'll enter my beginning and ending odometer readings  for 2018. And I also entered the Miles Driven for Business. The miles that were entered was about 90% of the total miles. The next question " Did you document any of the work miles you drove for your business, and I answered " No. I didn't.  I also entered all of the actual expenses for the truck .

The State of Oregon has audited my return and rejected it, stating the I need detailed mile logs to support the business miles driven and disallowed the Vehicle Depreciation. So, what am I not understanding? Is turbo tax in error, or is the auditor in error?

I looking at the Car and truck Expenses Worksheet it all matches the interview answers. and allowed the depreciation!