Delete AWS Member Account Prerequisites
Below are the steps that needs to be performed before deleting the Usage Account ::
Select the region you have used to onboard Cloudformation stack for usage account
Go to Cloudformation from the Services tab
On the Cloudformation Dashboard page, click on the Stacks from the left menu
Select the stack you used to onboard usage account and click on the delete button on the top
Confirm the deletion by clicking on Delete Stack button shown in the box
You will see the notification of successful deletion
Below is the description of the steps to delete stack from AWS:
Select the region you have used to onboard Cloudformation stack for usage account
Go to Cloudformation from the Services tab

On the CloudFormation Dashboard page, click on the Stacks from the left menu

Select the stack you used to onboard usage account and click on delete button on the top

Confirm the deletion by clicking on Delete Stack button shown in the box

You will see the notification of successful deletion