The HTTP_SERVICE_CONFIG_URLACL_KEY structure is used to specify a particular reservation record in the URL namespace reservation store. It is a member of the HTTP_SERVICE_CONFIG_URLACL_SET and HTTP_SERVICE_CONFIG_URLACL_QUERY structures.
The HTTP_SERVICE_CONFIG_URLACL_PARAM structure is used to specify the permissions associated with a particular record in the URL namespace reservation store. It is a member of the HTTP_SERVICE_CONFIG_URLACL_SET structure.