You may not have a 2210 if you have a penalty. The system has just figured it for you.
If you want to edit or see if you can reduce your penalty you need to go to the 'Other Tax Situations' section at the top of your federal return. Scroll down to 'Additional Tax Payments' and click start next to 'Underpayment Penalties'. You can see if you can reduce or remove the penalties the system assessed there. It will also generate a 2210 if it is needed.
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