The condition which is evaluated in order to apply the fallback route. If the condition is not provided it will evaluate to true by default. For grammar, See: https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-query-language
The name of the route. The name can only include alphanumeric characters, periods, underscores, hyphens, has a maximum length of 64 characters, and must be unique.