You can only fill it out again.

If the account number is written incorrectly, it can only be invalidated and filled in again. Formal platforms will verify whether the borrower's name, ID card, mobile phone number, and bank card number are consistent, and will alert you as soon as possible if there are any problems.

If you fill in the wrong card number, the binding will not be successful, so even if the loan is successful, the money will remain in the account balance. Just change the bank card number in time.