Hi there, Gabriellai.

Are you trying to generate an OTP or are you having an error while trying to connect your OCBC business account?

Nevertheless, here's how we can generate an OTP:

1. Launch the OCBC Business Mobile Banking app on the mobile phone .
2. Select OneToken from the menu on the right.
3. Select For account login, then enter your OneToken PIN to generate an OTP.

If you're getting an error, you can check this reference for the lists of possible solutions depending on the error: What to do if you get a bank error or can't download transactions in QuickBooks Online?

Once connected, you're good to categorise the transactions. I've added this article as your guide: Categorise and match online bank transactions in QuickBooks Online.

I'm just around if anything arises with your QuickBooks account. Keep safe!