8rendan, thank you for expressing your sentiments in our Community thread. 

I understand the significance of inviting accountants to join QuickBooks without experiencing errors. Please ensure you and your Accountant have the same version and region for you to finish the invite process. Doing this, you won't receive a notification with the same error message inside the program.

Moreover, you can visit this handy article to help you manage your team inside QBO: User roles and access rights in QuickBooks Online.

Please let us know if you have further questions about any QuickBooks-related queries. We're looking forward to having you here again. Have a good one!