I incorrectly added a Customer into the Supplier info, how do I delete them from the supplier list?

You can make the customer inactive, Jane.

Here's how to do it:

1. Go to the Expenses tab on the left menu and select Suppliers.
2. Find the name of the customer who's incorrectly added.
3. Click on the Edit dropdown and choose Make inactive.
   
   
4. Click Yes, make inactive to confirm.
   
   

With these steps, the customer will be labeled as deleted. To remove them from the supplier list, please ensure that the "Include inactive" box is not checked.

Recreate the customer profile to ensure it's up-to-date.

Here's a comprehensive guide on managing suppliers in QuickBooks Online(QBO): Edit, delete, and restore list elements in QuickBooks Online.

Additionally, I've included this article on how to handle your customer and supplier balances as you create their profiles: Manage outstanding balances for customers and suppliers in QuickBooks Online.

If you have any more questions about managing your customers, add them in the comments. We're here to help you.