Error 1014 - CNAME Cross-User Banned - Cloudflare

I have a problem with configure domain name system (DNS)
My new subdomain is and I have set CNAME for
I use cloudflare but there is a conflict for this CNAME set:

Error 1014

Ray ID: 827912a47f3b3bca • 2023-11-17 15:40:33 UTC

CNAME Cross-User Banned

Hi @Marioss

Sorry for not responding here for so long.
I see that you have already contacted support with the same issue.
Has your issue been resolved?