Bank Account validation stopped by 2-factor authentication from third-party (103). The phone numbers that appear doesn't match the numbers under my account.

Banking error 103 indicates that the user ID or password for the bank account you're trying to connect to is incorrect, Alex. You can fix this by following these steps:

First, double-check your sign-in information. Open a new window in your web browser and navigate directly to your bank's website.

Once you have your user ID and password ready, verify if your bank requires you to enable third-party access. Some banks need your permission to link your account to services like QuickBooks Online. Check your bank's website for instructions on how to enable this feature.

Next, connect your bank account to QuickBooks. Be sure to select the same bank you signed in to earlier, as some banks have similar names.

You can check this article for additional guidance on fixing bank error 103 in QuickBooks Online: Fix bank error 103 in QuickBooks Online and QuickBooks Self-Employed.

In the meantime, you can manually upload transactions into QuickBooks Online to keep your records accurate.

Feel free to comment below if you have any other concerns or questions about banking. We're always happy to assist you.