Modify the set of hostnames for a property version. For new entries, specify an add array with a cnameFrom set to the hostname your end users see as Host headers. In either cnameTo or edgeHostnameId, specify an existing edge hostname you want to redirect your hostname to. If you're using Default Domain Validation (DV) certificates, you can set the cnameTo to an edge hostname that doesn't exist yet, and PAPI creates it automatically when you activate the property version. To remove a hostname, specify a remove array with the address of the hostname you don't want to use with this property version anymore. If you remove an edge hostname from an active property configuration, use the Edge Hostname API (HAPI) to delete it entirely. If you modify hostnames with Default DV certificates, the response includes additional X-Limit-Default-Certs-Per-Contract-Limit and X-Limit-Default-Certs-Per-Contract-Remaining headers indicating their limits.
Note: If you're using a new account, first register it on the Akamai network by activating any property version on either staging or production. Otherwise, your attempts to create or specify certificates will fail with a 403 error.