You can rename any environment to which you have access, even if it is not your active environment.
To rename an environment:
Go to the Environments tab.
Click the environment that you want to rename.
The page with environment details opens.
Next to the environment creation details, click Rename.
In the Rename environment dialog box, enter the environment name.
The environment name should not exceed 30 characters and can contain letters, numbers, and the following specific characters:
' " . , : ; _ - / ( ).
The new environment name appears on the page with environment details and in the list of environments.