TurboTax won't let me file because it says Indiana University zip code is incorrect. We've verified it several places and it is correct. What do I do?
https://ttlc.intuit.com/community/bugs-and-error-messages/help/error-zip-code-is-invalid-for-electronic-filing/00/25839
Check that you didn't mistype the state abbreviation, e.g. IN instead of PA.