Hi, I have created several services. When I go to record an EXPENSE and add it under the ITEMS tab to a specific service, I can't, because my services are not visible.

Glad to see you in the Community space, markocoguric-360.

I'll give details why your service items are not showing up and what we can do to add them.

When you're not seeing the products you've created in the Item details section, it's possible that the I purchase this product/service from a supplier option is not selected.

Let's check your service item and make sure the option is selected by following these steps:

1. Go to Sales > Products and services.
2. Find the service item and click the Edit link under the Action column.
3. Scroll down to the Purchasing information section and put a check mark on the I purchase this product/service from a supplier box.
4. Add the purchase details and click Save and close.

Once done, go to the + New > Expense and you'll see the service items in the Product/Service drop-down. Here's a sample screenshot for a visual reference:

To help manage your product and service items, please check out this article: Add product and service items to QuickBooks Online.

If you need further assistance about your products and services or other concerns. Please feel free to reply on this post. I'll be here to help. Stay safe!