I just did what Richb89600 described - changed box 2 to the amount in box 10 on the OID worksheet, plus on the dropdown below Box 2 clicked Tax Exempt interest. No change to taxes owed based upon this change. Wish somebody could say for sure what the problem is here and how to fix it.
Note: I have the same error based upon a muni bond from the State of California, the 1099-OID is also from Schwab.
