TT600 errors, including TT600, TT601, TT602, TT603, AND TT604, are typically validation errors. This means you may have entered something into your return that TurboTax cannot understand or has not been programmed to accept.
The most common example is:
- Quotation marks, ampersands and other special characters in any fields that accept text, such as your name, address, your dependant’s names, etc.
Please verify all entries in the interview and profile at the beginning of your return. Then, please clear your cache/cookies, sign out of your return and restart your computer.
Thank you for choosing TurboTax.
