If you type "N/A" or "_" in the apartment number field it should allow you to proceed with your tax return.
Or you may have a 'phantom' blank space in the apartment box.
Follow
these steps:
1.
Open (continue) your tax return.
(To do this, sign in to TurboTax and click the orange Take me to my
return button.)
2.
Click the Personal Info Tab
3.
Click Edit by your Mailing address
4. Go to the Apt. # box and delete and/or backspace all characters/spaces (or add an "_" or "N/A"
Run the Review again. After you may still need to open each W-2 and 1099 Form to ensure that the address is corrected.
Please post in the comments if you still have trouble.
