How to refile if something went wrong the first time?

Was the first return rejected?  Or do you need to change an Accepted return?

I need to change an accepted fed return.

Then you need to mail in an Amended return.

How to amend an Online return   <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/4667226-how-do-i-amend-my-2018-turbotax-online-return">https://ttlc.intuit.com/questions/4667226-how-do-i-amend-my-2018-turbotax-online-return</a>

If you didn't get an email, search on the reject message or code for instructions on how to fix the rejected issue. Please see below for instructions on how to fix a rejected tax return:

https://ttlc.intuit.com/replies/3302275

You can also view information the IRS has listed on their website for assistance in correcting certain rejects like age, name or social security numbers.

https://www.irs.gov/faqs/electronic-filing-e-file/age-name-or-ssn-rejects-errors-correction-procedures

If you have further questions, call the IRS toll-free at 800-829-1040.