@TeamYouTube Hi I'm trying to transfer a custom url from one channel to another. They both meet the requirements for a custom url but I can't claim the url on the new channel despite deleting the url off the original channel. I'd appreciate if you'd DM and sort it out there.
You will be able to get your custom URL back after you removed it. Once removed, a custom URL is free to be claimed by another creator. If you regret removing your custom URL – please go to https://yt.be/help/5csj to try & claim it again. Hope this helps!