Hello, How can I have automated generated Numbers for the expense entries

Welcome back to the Community, @j-koborsy.

In QuickBooks Online (QBO), the ability to automatically generate numbers for expense transaction is currently unavailable. You can use the Ref no. field and enter them manually as a workaround.

Here's how:

1. In QBO, go to the + New option at the top left to get to the Expense. 
2. In the Ref no. field, enter the specific number. 
3. Fill in the other necessary information, then hit Save and close.

For more information about the process, check out this article: Enter, edit, or delete expenses in QuickBooks Online.

I'll pass along your suggestion to our Product Developers. They're always looking for ideas to consider on how to improve QBO. In the meantime, I recommend visiting our Blog site. This is where we share recent happenings and future developments, such as updates to newly added features.

Please know that I'm on a post away if you have any other concerns or questions. I'll be more than willing to help. Have a good one!