Is OCBC Malaysia integration available through API?

Thanks for sharing your concern here in the Community, Max. Let me route you in the right direction for support concerning API integration.

1. Go to this link: https://help.developer.intuit.com/s/. 
2. Choose QuickBooks Online under What do you need help with?
3. Click Ask a Question.
4. Log in with your existing Intuit Developer Account or create a new one.
5. Enter your question or concern.
6. Click Ask.

Furthermore, you can always check out the resources on the API Docs & Tools and Blog tabs on the Intuit Developer site. 

For future use, here's a comprehensive guide on ensuring your QuickBooks accounts match your real-life ones: Reconcile workflow.

Let me know if you need further assistance using the available features in QuickBooks Online. I'm always available to lend a hand.