If the error The requested configuration is currently not supported. Please check the documentation for supported configurations or Your requested instance type (T) is not supported in your requested Availability Zone (AZ). Please retry your request by not specifying an Availability Zone or choosing az1, az2, az3 is received, the instance type that you tried to provision is not supported in the specified AZ. Try selecting another subnet to deploy the cluster in, which will implicitly select another AZ.