Hello there, wellwishglobaldi.

Let's make sure you'll be able to create a transaction using the inventory item you created without receiving a prompt.

Make sure the invoice date or transaction date you select is after the date you set up in the As of date field. Here's a sample screenshot for additional reference:

For example, the inventory as of date is 03/27/2023, we should select a date that comes after that date when creating a transaction.  

You can check this article for more tips and details about tracking inventory in QuickBooks: Learn how to track your inventory in QuickBooks Online Plus and Advanced. 

If you have more concerns, please don't hesitate  to comment below. I'll be around to help. Take care and stay safe.