[CF4SaaS] More details on hostname validation

src/content/docs/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/index.mdx

@@ -6,14 +6,12 @@ sidebar:
 
 ---
 
+import { DirectoryListing } from "~/components";
+
 Before Cloudflare can proxy traffic through a custom hostname, we need to verify your customer's ownership of that hostname.
 
 :::note
-
-
 If a custom hostname is already on Cloudflare, using the [pre-validation methods](/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/pre-validation/) will not shift the traffic to the SaaS zone. That will only happen once the [DNS target](/cloudflare-for-platforms/cloudflare-for-saas/start/getting-started/#3-have-customer-create-cname-record) of the custom hostnames changes to point to the SaaS zone.
-
-
 :::
 
 ## Options
@@ -22,7 +20,10 @@ If minimizing downtime is more important to you, refer to our [pre-validation me
 
 If ease of use for your customers is more important, review our [real-time validation methods](/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/realtime-validation/).
 
-## Other resources
+## Limitations
+
+Custom hostnames using another CDN are not compatible with Cloudflare for SaaS. Since Cloudflare must be able to validate your customer's ownership of the hostname you add, if their usage of another CDN obfuscates their DNS records, hostname validation will fail.
+
+## Related resources
 
-* [Hostname validation statuses](/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/validation-status/)
-* [Error codes](/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/error-codes/)
+<DirectoryListing />

src/content/docs/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/validation-status.mdx

@@ -19,3 +19,9 @@ When you [validate a custom hostname](/cloudflare-for-platforms/cloudflare-for-s
 | Blocked             | Custom hostname cannot be added to Cloudflare at this time. Custom hostname was likely associated with Cloudflare previously and flagged for abuse.<br/><br/>If you are an Enterprise customer, contact your Customer Success Manager. Otherwise, email `[email protected]` with the name of the web property and a detailed explanation of your association with this web property. |
 | Moved               | Custom hostname is not active after **Pending** for the entirety of the [Validation Backoff Schedule](/cloudflare-for-platforms/cloudflare-for-saas/domain-support/hostname-validation/backoff-schedule/) or it no longer points to the fallback origin.                                                                                                                                     |
 | Deleted             | Custom hostname was deleted from the zone. Occurs when status is **Moved** for more than seven days.                                                                                                                                                                                                                                                                                         |
+
+## Refresh validation
+
+To run the custom hostname validation check again, select **Refresh** on the dashboard or send a `PATCH` request to the [Edit custom hostname endpoint](/api/resources/custom_hostnames/methods/edit/). If using the API, make sure that the `--data` field is not empty.
+
+If the hostname is in a **Moved** or **Deleted** state, the refresh will set the custom hostname back to **Pending validation**.