If you are trying to enter your bank account number into TurboTax for the account into which your refund should be deposited, which one has more digits . . .(1) Your account number, or (2) the TurboTax entry spaces?
(1) If your account number seems too long, the extra four digits are probably a specific check number, which shouldn't be included in the entry to TurboTax. You should contact your bank to verify your account number.
-or-
(2) If the TurboTax entry has too many spaces, that's okay. Enter your account number starting with the leftmost space and ignore any additional spaces in the TurboTax entry area.