Every time I want to link to my bank[Bank of China - CBS Business Banking (HK)] it only told me to try it later and Error 163

Hello, Kenny. 

 I'd like to point out some information about the Error code 163. I'll also give some details on how we can bring over your Bank of China transactions into QuickBooks. 

Bank of China is likely doing some maintenance updates for the bank connection (this can trigger the error code 163). You'll want to contact their support for the full details and when they'll finish the updates. 

Alternatively, check for any alerts or similar notifications in their website. 

In the meantime, you'll want to use the manual upload method to add your transactions into QuickBooks Online. This is done through an Excel file. 

This article outlines the full details of the steps: Manually upload transactions into QuickBooks Online.

After uploading those transactions, you can start adding or categorizing them. 

If you need to check your financial data and health after adding or categorizing your transactions, feel free to use our reports. This article will help you familiarize the Reports feature: Run reports in QuickBooks Online.

I'm always open for more questions, so don't forget to visit this thread if you have other concerns with QuickBooks or the Online Banking feature. I'm ready to help.