Custoem Hostname and 404

What is the issue you’re encountering

Blank 404 Page

What steps have you taken to resolve the issue?

Reset the custom hostname

I have a domain on cloudflare mydomian.com and I have a subdomain time.mydomain.com. This is connecting via a tunnel to my application. All Good works great.
I have another domain on aws awsdomain.com with a subdomain time.awsdomain.com. I am trying to create cloudflare custom hostname for time.awsdomain.com.
In mydomain.com dashboard under SSL I create custom domain for time.awsdomain.com with fallback time.mydomain.com. This all makes sense.
In custom host I get confused. I get a txt dns recond to copy in format _cf-custom-time.awsdomain.com with a text value. this verifes ok.
And another in format ?? _acme-challenge. CNAME
So do I add _acme-challenge.time.awsdomain.com CNAME time.awsdomain.com to the AWS domain ?
Also I assume I also need a cname for time.awsdomain.com pointing to time.mydomain.com otherwise how is it going to get there.
I am getting a 404 on time.awsdomain.com but time.mydomain.com via tunel is ok.
I am confused
Thanks

If you’re trying to add acme related DNS records, it’ll cause some issues since Cloudflare’s Universal SSL also uses CA of Let’s Encrypt to issue certificate(s) for proxied :orange: hostnames.

Why you’re getting 404, I am afraid it comes from the origin host, rather than from Cloudflare :thinking:

An HTTP 404 error is a client side error that means that the origin web server couldn’t find a requested file.

Thanks for reply. It was the origin. I added an ingress rule to tunnel config for the custom host name and restarted the tunnel all ok. Why do cloudflare use .yml in some docs and .yaml in others ? I realise they have a lot of services but their documentation needs tidying up.