When you create a zone and after you upload a custom host name certificate, you’re now required to verify ownership using a TXT record. The verification record is displayed in Business Manager after uploading the certificate. You create a TXT record in your DNS portal.
How: In Business Manager, go to and use the zone creation workflow and your DNS portal to generate the TXT record and verify the host name.
Note Self-signed certificates are not supported. See this Knowledge Article.