Quickbooks won't let me enter a vendor because they are already a customer, is there a way to do this?

It’s nice to see you in the Community, raylrock.

Yes, there’s a way for you to enter a vendor even if the customer is already using this name. Let’s change the display name to successfully set up the supplier in your company.

Here’s how:

1. Navigate to the Sales menu to select Customers.
2. From there list, click on the customer’s name to view more details.
3. Tap the Edit button to open the Customer Information window.
4. Change the Display name to the following format: Last and first.
5. Click Save to keep the changes.

Once done, you can now enter your supplier in QuickBooks Online. For detailed instructions, check out this guide: Add a supplier.

I've included a screenshot on how the vendor's information should look like.

For additional resources, this article contains additional troubleshooting steps on how to move past the following error: The name supplied already exists. Another customer, vendor, or employee is already using this name.

Don’t hesitate to click the Reply button if you have additional questions about QuickBooks. I’m always ready to answer them for you. Enjoy your day.

I’m back to make sure this raylrock.

Were you able to add the vendor’s name after following the steps I provided? I want to make sure this is taken care of for you.

Let me know in the comment section below if you still need help with QuickBooks. I’ll get back to assist further. Enjoy your weekend.