E-file reject R0000-507-01: A dependent on your return has already been claimed (or claimed themselves) on another return
This usually means that someone else, such as an ex-spouse, has already claimed your dependent. For confidentiality reasons, the IRS is unable to disclose who that person is.
Less commonly, you can get an R0000-507-01 rejection if you entered a dependent's Social Security number incorrectly or if somebody filed a fraudulent return using your dependent's Social Security number.
You'll need to leave the TurboTax app and sign in to a browser:
- Sign out of the app by tapping the TurboTax icon in the upper-left corner > App Settings > Sign Out.
- Open your browser (either on your device or a computer) and sign in at MyTurboTax.com (use your app login).
- Fix and refile your return in TurboTax Online. Instructions