Alabama - Driver's License/State ID Number Limited To 7 Characters
When selecting Alabama on the Provide your state ID information screen, TurboTax limits the ID number to 7 digits, but some Alabama IDs have 8.
To e-file an Alabama return, you must enter either a driver's license or another type of State issued ID. If you are entering an Alabama Driver's License, the license number must be exactly 7 digits. Other types of State IDs may contain up to 8 characters.
Be sure you make the appropriate selection when asked What type of state-issued ID do you have? on the screen just prior to entering the ID information.
If you are still having issues after selecting the right type of ID, you will need to file by mail.