To be clear, your 401(k), including the designated Roth account in your 401(k), is not an IRA. As DoninGA indicated, traditional and Roth 401(k) contributions go in the Business section. If you made any ordinary (not SEP or SIMPLE) IRA contributions (you do not seem to have made any unless you have mischaracterized your Roth contribution), those would go in the Deductions & Credits section.
