@HoneyLynn_G 

RE: There isn't a limit of how many classes you can have in QuickBooks Desktop as long as they are set up properly

Yes, there is.  You can have 10,000 classes with Pro and Premier or 100,000 with Enterprise.

Intuit has published this information, which I'm sure is taught in QB traning: https://quickbooks.intuit.com/community/Help-Articles/Maximum-number-of-list-entries-list-limits-and...