Turbotax is asking what my spouse's net income (756930) is. He hasn't done his taxes yet, so I don't have that exact info. So I tried entering an estimate, as another post suggested. However, no matter what I put in that box it won't accept it. It just keeps saying "Your spouse's net income (Line 23600) should be calculated by subtracting social benefit repayments (Line 23500) from their net income before adjustments (Line 23400)." Nothing I enter is accepted by the system. How do I get past this step?