Custom URL - edit or change the CNAMEIssue There is currently an active custom URL setup for the instance which is as below for example support.example.com However if you would like to change it to a different custom URL like below support-us.example.com Kindly follow the steps mentioned in the resolutionReleaseAllResolutionOnce you have setup the custom URL in your instance, its not possible to edit the existing configuration like editing the CNAME to change the URL. We recommend you to setup a new custom URL in the instance and remove the old one if not necessary. Below steps can be followed.1) Add new CNAME for the new Custom URL on your DNS.2) Add new domain name as a customURL within instance.3) Make any relevant changes in instance (customer needs to be aware of if any).4) Remove the old Custom URL from within the instance (By inactivating it and then deleting it on the custom URL table)5) remove the old CNAME from your DNS.Related LinksBelow are the official documentation for setting up custom URL in your instance. Custom URLs association to your instanceSet a custom URL as the instance URL