Why do I get an error 'CNAME not mapped correctly' when I try to add my domain?

If the CNAME entry has not been created and mapped to catalyst.cs.zohohost.com, the Catalyst console will display a “CNAME not mapped correctly” error when you attempt to add your domain under Domain Mappings. You can resolve this error by creating a CNAME entry pointing to Catalyst, following the steps in the Add a Domain Mapping section of the Domain Mappings Implementation help page.