Remove solution that was not on source and add intro paragraph

Author: RebeccaTamachiro

src/content/docs/dns/zone-setups/subdomain-setup/setup/index.mdx

@@ -68,9 +68,11 @@ Although the how-to guides in this documentation are focused on both parent doma
 
 ## SSL/TLS certificates
 
+When using subdomain setup, you should consider possible interactions between parent zone and child zone configurations that could impact [SSL/TLS certificates](/ssl/) provisioning.
+
 If a certificate is already active on the child zone for a specific hostname (`subdomain.example.com`), any certificate pack containing that exact hostname in the parent zone (`example.com`) will fail validation.
 
-Also, if a wildcard DNS record exists in the parent zone (`*.example.com`) that covers a hostname in the child zone (`subdomain.example.com`), the [domain control validation (DCV) process](/ssl/edge-certificates/changing-dcv-method/) for a certificate in the child zone will fail. To successfully provision the certificate in the child zone, you must pause or remove the conflicting wildcard DNS record on the parent zone.
+Also, if a wildcard DNS record exists in the parent zone (`*.example.com`) that covers a hostname in the child zone (`subdomain.example.com`), the [domain control validation (DCV) process](/ssl/edge-certificates/changing-dcv-method/) for a certificate in the child zone will fail.
 
 ## Access applications