Hi. I have an issue with my form 2210: Line D withholding. The sum of 4 columns not equal 1507. I try to edit it to 1507 but I get the same issue.

[luigicaloi]

I'm not sure where I can access my form 2210 in any case. I tried editing the problem as Turbotax gave me the box for line D, but it didn't fix the issue as it keeps "complaining". I can't file my taxes

[JotikaT2]

Please see how do I add Form 2210 for steps to get you back to the input section.

If you are still having issues after making the changes, another option is to delete the form and then letting TurboTax regenerate the form.  If you are using TurboTax Desktop, please see this link.  If you are using TurboTax Online, please see this link for guidance.