The service name/FQDN information you provided is invalid.
During the NSX Application Platform deployment preparation, you provided a service name or FQDN information that is invalid. The system needs this information to access the TKC or upstream Kubernetes cluster to deploy the NSX Application Platform components on it.
The service name or FQDN is in an invalid format.
Correct the format of the service name or FQDN, and ensure that it is in a local service domain. The correct format depends on the TKC or upstream Kubernetes environment you are using. For example, for a Calatrava setup, the following is a valid FQDN.