diff --git a/app/controllers/new_administrateur/procedures_controller.rb b/app/controllers/new_administrateur/procedures_controller.rb
index 11116b8db..29cf33abc 100644
--- a/app/controllers/new_administrateur/procedures_controller.rb
+++ b/app/controllers/new_administrateur/procedures_controller.rb
@@ -125,12 +125,20 @@ module NewAdministrateur
     end
 
     def update_jeton
-      if !@procedure.update(procedure_params)
-        flash.now.alert = @procedure.errors.full_messages
+      token = params[:procedure][:api_entreprise_token]
+      @procedure.api_entreprise_token = token
+
+      if @procedure.valid? &&
+          ApiEntreprise::PrivilegesAdapter.new(token).valid? &&
+          @procedure.save
+
+        redirect_to jeton_admin_procedure_path(procedure_id: params[:procedure_id]),
+          notice: 'Le jeton a bien été mis à jour'
       else
-        flash.notice = 'Le jeton a bien été mis à jour'
+
+        flash.now.alert = "Mise à jour impossible : le jeton n'est pas valide"
+        render 'jeton'
       end
-      render 'jeton'
     end
 
     def publication
diff --git a/app/lib/api_entreprise/api.rb b/app/lib/api_entreprise/api.rb
index 716c28f30..62699fa63 100644
--- a/app/lib/api_entreprise/api.rb
+++ b/app/lib/api_entreprise/api.rb
@@ -8,6 +8,7 @@ class ApiEntreprise::API
   ATTESTATION_SOCIALE_RESOURCE_NAME = "attestations_sociales_acoss"
   ATTESTATION_FISCALE_RESOURCE_NAME = "attestations_fiscales_dgfip"
   BILANS_BDF_RESOURCE_NAME = "bilans_entreprises_bdf"
+  PRIVILEGES_RESOURCE_NAME = "privileges"
 
   TIMEOUT = 15
 
@@ -24,48 +25,64 @@ class ApiEntreprise::API
   end
 
   def self.entreprise(siren, procedure_id)
-    call(ENTREPRISE_RESOURCE_NAME, siren, procedure_id)
+    call_with_siret(ENTREPRISE_RESOURCE_NAME, siren, procedure_id)
   end
 
   def self.etablissement(siret, procedure_id)
-    call(ETABLISSEMENT_RESOURCE_NAME, siret, procedure_id)
+    call_with_siret(ETABLISSEMENT_RESOURCE_NAME, siret, procedure_id)
   end
 
   def self.exercices(siret, procedure_id)
-    call(EXERCICES_RESOURCE_NAME, siret, procedure_id)
+    call_with_siret(EXERCICES_RESOURCE_NAME, siret, procedure_id)
   end
 
   def self.rna(siret, procedure_id)
-    call(RNA_RESOURCE_NAME, siret, procedure_id)
+    call_with_siret(RNA_RESOURCE_NAME, siret, procedure_id)
   end
 
   def self.effectifs(siren, procedure_id, annee, mois)
     endpoint = [EFFECTIFS_RESOURCE_NAME, annee, mois, "entreprise"].join('/')
-    call(endpoint, siren, procedure_id)
+    call_with_siret(endpoint, siren, procedure_id)
   end
 
   def self.effectifs_annuels(siren, procedure_id)
-    call(EFFECTIFS_ANNUELS_RESOURCE_NAME, siren, procedure_id)
+    call_with_siret(EFFECTIFS_ANNUELS_RESOURCE_NAME, siren, procedure_id)
   end
 
   def self.attestation_sociale(siren, procedure_id)
     procedure = Procedure.find(procedure_id)
-    call(ATTESTATION_SOCIALE_RESOURCE_NAME, siren, procedure_id) if procedure.api_entreprise_role?("attestations_sociales")
+    call_with_siret(ATTESTATION_SOCIALE_RESOURCE_NAME, siren, procedure_id) if procedure.api_entreprise_role?("attestations_sociales")
   end
 
   def self.attestation_fiscale(siren, procedure_id, user_id)
     procedure = Procedure.find(procedure_id)
-    call(ATTESTATION_FISCALE_RESOURCE_NAME, siren, procedure_id, user_id) if procedure.api_entreprise_role?("attestations_fiscales")
+    call_with_siret(ATTESTATION_FISCALE_RESOURCE_NAME, siren, procedure_id, user_id) if procedure.api_entreprise_role?("attestations_fiscales")
   end
 
   def self.bilans_bdf(siren, procedure_id)
     procedure = Procedure.find(procedure_id)
-    call(BILANS_BDF_RESOURCE_NAME, siren, procedure_id) if procedure.api_entreprise_role?("bilans_entreprise_bdf")
+    call_with_siret(BILANS_BDF_RESOURCE_NAME, siren, procedure_id) if procedure.api_entreprise_role?("bilans_entreprise_bdf")
+  end
+
+  def self.privileges(token)
+    call_with_token(PRIVILEGES_RESOURCE_NAME, token)
   end
 
   private
 
-  def self.call(resource_name, siret_or_siren, procedure_id, user_id = nil)
+  def self.call_with_token(resource_name, token)
+    url = "#{API_ENTREPRISE_URL}/privileges?token=#{token}"
+    response = Typhoeus.get(url,
+      timeout: TIMEOUT)
+
+    if response.success?
+      JSON.parse(response.body, symbolize_names: true)
+    else
+      raise RequestFailed, "HTTP Error Code: #{response.code} for #{url}\nheaders: #{response.headers}\nbody: #{response.body}"
+    end
+  end
+
+  def self.call_with_siret(resource_name, siret_or_siren, procedure_id, user_id = nil)
     return if ApiEntrepriseToken.new(token_for_procedure(procedure_id)).expired?
     url = url(resource_name, siret_or_siren)
     params = params(siret_or_siren, procedure_id, user_id)
diff --git a/app/lib/api_entreprise/privileges_adapter.rb b/app/lib/api_entreprise/privileges_adapter.rb
new file mode 100644
index 000000000..8064d5962
--- /dev/null
+++ b/app/lib/api_entreprise/privileges_adapter.rb
@@ -0,0 +1,20 @@
+class ApiEntreprise::PrivilegesAdapter < ApiEntreprise::Adapter
+  def initialize(token)
+    @token = token
+  end
+
+  def valid?
+    begin
+      get_resource
+      true
+    rescue
+      false
+    end
+  end
+
+  private
+
+  def get_resource
+    ApiEntreprise::API.privileges(@token)
+  end
+end
diff --git a/spec/controllers/new_administrateur/procedures_controller_spec.rb b/spec/controllers/new_administrateur/procedures_controller_spec.rb
index ecc2c4095..de1efc074 100644
--- a/spec/controllers/new_administrateur/procedures_controller_spec.rb
+++ b/spec/controllers/new_administrateur/procedures_controller_spec.rb
@@ -333,11 +333,38 @@ describe NewAdministrateur::ProceduresController, type: :controller do
 
   describe 'PATCH #jeton' do
     let(:procedure) { create(:procedure, administrateur: admin) }
-    let(:valid_token) { "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c" }
+    let(:token) { "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c" }
 
-    it "update api_entreprise_token" do
-      patch :update_jeton, params: { id: procedure.id, procedure: { api_entreprise_token: valid_token } }
-      expect(procedure.reload.api_entreprise_token).to eq(valid_token)
+    subject { patch :update_jeton, params: { id: procedure.id, procedure: { api_entreprise_token: token } } }
+
+    before do
+      allow_any_instance_of(ApiEntreprise::PrivilegesAdapter).to receive(:valid?).and_return(token_is_valid)
+      subject
+    end
+
+    context 'when jeton is valid' do
+      let(:token_is_valid) { true }
+
+      it { expect(flash.alert).to be_nil }
+      it { expect(flash.notice).to eq('Le jeton a bien été mis à jour') }
+      it { expect(procedure.reload.api_entreprise_token).to eq(token) }
+    end
+
+    context 'when jeton is invalid' do
+      let(:token_is_valid) { false }
+
+      it { expect(flash.alert).to eq("Mise à jour impossible : le jeton n'est pas valide") }
+      it { expect(flash.notice).to be_nil }
+      it { expect(procedure.reload.api_entreprise_token).not_to eq(token) }
+    end
+
+    context 'when jeton is not a jwt' do
+      let(:token) { "invalid" }
+      let(:token_is_valid) { true } # just to check jwt format by procedure model
+
+      it { expect(flash.alert).to eq("Mise à jour impossible : le jeton n'est pas valide") }
+      it { expect(flash.notice).to be_nil }
+      it { expect(procedure.reload.api_entreprise_token).not_to eq(token) }
     end
   end