Hello,
Welcome to the QuickBooks Canada Desktop Community. I'll be happy to help you with the items and classes. With QuickBooks Desktop class tracking, you can easily customize the tracking of specific expenses and also categorize shared expenses across multiple accounts.
If you're seeing alerts stating one or more items have not been assigned a class, I suggest following the steps in this article to make sure that the classes are set up correctly: https://quickbooks.intuit.com/blog/whats-new/how-to-use-class-tracking-in-quickbooks/.
If you're still experiencing the same issues after going through the steps, I suggest you reach out to our support line at 1-877-772-9158 for further assistance. Pro and Premier support is available 24 hours and Enterprise support is available from 9 a.m. to 8 p.m. EST, Monday to Friday.
Let me know if you have any other questions.
