Missing API definition !!

Hello, I have API for the selection of the advertisements in my BDD, I it test http://localhost:3013/annonce/invoke Ca walks well but the problem that at the time of the consomation of the Web local service one with an application customer it my gives the probléme according

my API c :

class AnnonceApi < ActionWebService::API::Base   api_method :find_all_annonces,   :expects => [:int],   :returns => [Annonce]

end

my Methode

class AnnonceController < ApplicationController   wsdl_service_name 'Annonce'   web_service_api AnnonceApi   web_service_scaffold :invoke

  def find_all_annonces(id)      Annonce.find(id)   end end

my Methode client in auther application in local

class ClientController < ApplicationController   web_client_api :annonce,   :soap,     "http://localhost:3013/annonce/api&quot;

  def list(id)     annonce.find_all_annonces(id)   end end

Merci