Indiana rejected my e-filed return due to "FIT40RNR-001 - Line 3A on the Form IT-40RNR ... must equal Line 1A ... minus line 2A". How can I fill in 3A which is empty?

The full message from the Turbotax rejection email says:

"FIT40RNR-001 - Line 3A on the Form IT-40RNR, 'Indiana Adjusted Gross Income', must equal Line 1A, 'State Gross Income', minus line 2A, 'Allowable Deductions'."

Line 1A  correctly lists Indiana income, line 2A is 0, but line 3A is missing any value at all. Can I somehow go directly to the form with Turbotax Online to type the value in?