Can I change an expense to a check? It has a check number already but instead of coming up as "check" it comes up as "expense". Thanks!

Yes, you can, lmatriccino-east.

We'll have to delete the expense transaction before creating a check. Make sure to take note of all the details to keep your record correct. 

Here's how to delete the expense:

1. Go to Bookkeeping and then select Transactions.
2. Choose Expenses.
3. Find the expense you want to delete.
4. Select the View/Edit drop-down menu in the Action column.
5. Click Delete.
6. Select Yes to confirm.

For more details, please see this article: Manage Expenses.

Once done, we can now create a check.

Please note that Expense and Check are entirely interchangeable in QuickBooks Online. You may or may not change the transaction.

I've also added this article that'll help you track and manage your vendor transactions in QuickBooks Online: The Difference Between Bills, Checks, and Expenses.

Please keep us posted if you need additional assistance in modifying the transaction. We want to make sure your books are always accurate.