Issues integrating conversion api via stape

I’m setting up Conversion API using for a facebook ads campaign.

The process asks us to create a CNAME record for a subdomain pointing to

When we try to access the site, it gives an error 1014

Error 1014 means CNAME Cross-User Banned. It means you are CNAME to a domain/subdomain which is not under your Cloudflare accounts.

By default, Cloudflare prohibits a DNS CNAME record between domains in different Cloudflare accounts. CNAME records are permitted within a domain and across zones within the same user account or using our Cloudflare for SaaS solution.

You can read more at Troubleshooting Cloudflare 1XXX errors · Cloudflare Support docs.