How do you switch Customer to Vendor when accidently created incorrectly?

Hi Churl, 

Let me help change a vendor that was added incorrectly as customer in QuickBooks Online (QBO).

Right at this moment, QBO does not have a direct feature to convert a customer to a vendor. However, we can perform a simple workaround to achieve this.

First, let's inactivate the customer before creating a new vendor. 

Here's how:

1. Go to the Sales tab.
2. Hover over Sales and select Customers.
3. Search for the customer whose name you want to use for the new vendor.
4. Mark the customer as Inactive.

Once you have marked the customer as inactive, you can now create a new vendor with the correct name.

We are doing this because QBO does not allow you to use duplicate names in creating different vendor/customer profiles. 

Since you have already set up your vendor, you can refer to this article to learn how to use QuickBooks Bill Pay for QuickBooks Online: Learn about QuickBooks Bill Pay.

I would also like to suggest the following articles to help you manage your customers and vendors:

• Add and manage customers in QuickBooks Online.
• How to view and edit vendor transactions in QuickBooks Online.

Please feel free to drop a comment below if you have additional questions about your customer's data. I'm always here to assist you. Stay safe!