Items list is missing when Creating a new check

Good day, @dcaldarone.

You have to turn on the Show Items table on expense and purchase forms by following the steps below:

1. From the Gear icon, select Company Settings.
2. Choose Expenses and then Bills and Expenses.
3. Tick Show Items table on Expense and Purchase Forms.
4. Click Save, then Done.

Also, you can read out these articles on how to add and track your inventory in QuickBooks: 

• Add inventory products in QuickBooks Online
• Set up and track your inventory in QuickBooks Online

Let me know if you have any other questions, I’ll be more than happy to help you. Thanks for dropping by and take care!