How to change a customer in projects

Welcome to the Community, @suecarletta.

I'm here to help you correct a Project for a Customer in QuickBooks Online.

At this time, once a Project is assigned to a Customer, you can no longer change it. As a workaround, you'll need to delete the Project and assign it to the right Customer. You can refer to these Community Articles to make changes in your account:

• Projects FAQ: This article provides steps on how to delete the Project, as well as giving more information about Projects.
• Set up and create projects in QuickBooks Online: This article provides steps on how to set up a Project.

if you have any additional questions or concerns, please don't hesitate and reach back out to me! I'm always here to help you in any way that I can. Have a good one.