Yes, TRA Verification Code is intended for Tanzania, henning1. This is intended for their taxes. Let's see what we'll have to do with the code.
We can use this code for the Taxpayer Receipt Verification Portal. This is were we can review the taxes and compliance. I'd also recommend reaching out to Tanzania Revenue Authority's support so they can give you more details about the TRA Verification Code. We can find their information through this link: https://verify.tra.go.tz/.
Meanwhile, when you set up sales tax, make sure you enter the details correctly. This is will help QuickBooks Online to accurately calculate the taxes on your transactions. This is the reference on how to properly set up the sales tax: Set up and use tax in QuickBooks Online.
Once you're done with the setup, the following link will help us understand how QuickBooks Online calculates the sales taxes: Learn how QuickBooks Online calculates tax.