When i try to do the 'Set up Tax' it doesn't work i get error code: Tax Group requires atleast one purchase or sales rate (code: "INDIRECTTAX-19777")

Thank you for posting your concern here in the Community, @info-printerswor.

I understand what it's like to be in a situation where you're unable to get the fix you need especially when setting up sales tax in QuickBooks Online (QBO). Please know that I'm here to help. 

I've checked my resources for the error you mentioned, and it's already been resolved. Since you're still experiencing this issue, let's perform some basic troubleshooting steps by clearing the browser's cache and logging in to a private browser.

Here are the keyboard shortcuts:

• For Safari: Command + Shift + N
• For Google Chrome: CTRL + Shift + N
• For Mozilla Firefox or Microsoft Edge: CTRL + Shift + P

Moreover, we can check our sales tax settings to ensure there's no missing information.

If the issue persists, I'd recommend contacting our customer support again. This way, they can reopen the investigation and provide you with a permanent solution. 

In QBO, we can run a Sales Tax Liability report to view how much sales tax you owe. It helps ensure everything is accurate before filing a return to your tax agency.

If you have other follow-up concerns about sales taxes, please don't hesitate to leave a reply. We're always here to help. Stay safe.