diff --git a/app/controllers/administrateurs/procedures_controller.rb b/app/controllers/administrateurs/procedures_controller.rb
index 9e61f94a7..a5c1eaa3a 100644
--- a/app/controllers/administrateurs/procedures_controller.rb
+++ b/app/controllers/administrateurs/procedures_controller.rb
@@ -3,7 +3,7 @@ module Administrateurs
     layout 'all', only: [:all, :administrateurs]
     respond_to :html, :xlsx
 
-    before_action :retrieve_procedure, only: [:champs, :annotations, :modifications, :edit, :zones, :monavis, :update_monavis, :jeton, :update_jeton, :publication, :publish, :transfert, :close, :confirmation, :allow_expert_review, :allow_expert_messaging, :experts_require_administrateur_invitation, :reset_draft, :publish_revision]
+    before_action :retrieve_procedure, only: [:champs, :annotations, :modifications, :edit, :zones, :monavis, :update_monavis, :jeton, :update_jeton, :publication, :publish, :transfert, :close, :confirmation, :allow_expert_review, :allow_expert_messaging, :experts_require_administrateur_invitation, :reset_draft, :publish_revision, :check_path]
     before_action :draft_valid?, only: [:apercu]
     after_action :reset_procedure, only: [:update]
 
@@ -318,6 +318,16 @@ module Administrateurs
       end
     end
 
+    def check_path
+      @path_available = @procedure.path_available?(params[:path])
+      @other_procedure = @procedure.other_procedure_with_path(params[:path])
+      respond_to do |format|
+        format.turbo_stream do
+          render :check_path
+        end
+      end
+    end
+
     def publish
       @procedure.assign_attributes(publish_params)
 
diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index 21b8e8ac5..e1d9b0176 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -395,7 +395,7 @@ class Procedure < ApplicationRecord
     slug = libelle&.parameterize&.first(50)
     suggestion = slug
     counter = 1
-    while !path_available?(administrateur, suggestion)
+    while !path_available?(suggestion)
       counter = counter + 1
       suggestion = "#{slug}-#{counter}"
     end
@@ -408,10 +408,8 @@ class Procedure < ApplicationRecord
       .find_by(path: path)
   end
 
-  def path_available?(administrateur, path)
-    procedure = other_procedure_with_path(path)
-
-    procedure.blank? || (administrateur.owns?(procedure) && canonical_procedure_child?(procedure))
+  def path_available?(path)
+    other_procedure_with_path(path).blank?
   end
 
   def canonical_procedure_child?(procedure)
diff --git a/app/views/administrateurs/procedures/_publication_form_inputs.html.haml b/app/views/administrateurs/procedures/_publication_form_inputs.html.haml
index ba85d2f3b..99d7f3094 100644
--- a/app/views/administrateurs/procedures/_publication_form_inputs.html.haml
+++ b/app/views/administrateurs/procedures/_publication_form_inputs.html.haml
@@ -14,8 +14,11 @@
                       placeholder: t('activerecord.attributes.procedure.procedure_path_placeholder'),
                       required: true,
                       class: 'unstyled flex-1',
-                      pattern: '^[a-z0-9_-]{3,200}$',
-                      autocomplete: 'off')
+                      pattern: '[a-z0-9.\-_]{3,200}',
+                      autocomplete: 'off',
+                      data: { controller: 'turbo-input', turbo_input_url_value: admin_procedure_check_path_path })
+
+  #check_path
 
 .fr-input-group
   = label_tag :lien_site_web, class: 'fr-label' do
diff --git a/app/views/administrateurs/procedures/check_path.turbo_stream.haml b/app/views/administrateurs/procedures/check_path.turbo_stream.haml
new file mode 100644
index 000000000..eea5c6ccb
--- /dev/null
+++ b/app/views/administrateurs/procedures/check_path.turbo_stream.haml
@@ -0,0 +1,6 @@
+= turbo_stream.update 'check_path' do
+  - if @path_available == false && current_administrateur.owns?(@other_procedure)
+    %p.fr-error-text= t('.path_not_available.owner')
+  - elsif @path_available == false
+    %p.fr-error-text= t('.path_not_available.not_owner')
+  - else
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 65529d663..f389547b1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -657,8 +657,7 @@ en:
           attributes:
             path:
               taken: is already used for procedure. You cannot use it because it belongs to another administrator.
-              taken_can_be_claimed: Is the same as another of your procedure. If you publish this procedure, the other one will be unpublished
-              invalid: is not valid. It must countain between 3 and 50 characters among a-z, 0-9, '_' and '-'.
+              invalid: is not valid. It must countain between 3 and 200 characters among a-z, 0-9, '_' and '-'.
         "dossier/champs":
           format: "%{message}"
           attributes:
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 780264e06..0e876e8e5 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -658,8 +658,7 @@ fr:
           attributes:
             path:
               taken: est déjà utilisé par une démarche. Vous ne pouvez pas l’utiliser car il appartient à un autre administrateur.
-              taken_can_be_claimed: est identique à celui d’une autre de vos démarches publiées. Si vous publiez cette démarche, l’ancienne sera dépubliée et ne sera plus accessible au public. Les utilisateurs qui ont commencé un brouillon vont pouvoir le déposer.
-              invalid: n’est pas valide. Il doit comporter au moins 3 caractères, au plus 50 caractères et seuls les caractères a-z, 0-9, '_' et '-' sont autorisés.
+              invalid: n’est pas valide. Il doit comporter au moins 3 caractères, au plus 200 caractères et seuls les caractères a-z, 0-9, '_' et '-' sont autorisés.
         "dossier/champs":
           format: "%{message}"
           attributes:
diff --git a/config/locales/views/administrateurs/procedures/en.yml b/config/locales/views/administrateurs/procedures/en.yml
index 569747ffa..8279cb808 100644
--- a/config/locales/views/administrateurs/procedures/en.yml
+++ b/config/locales/views/administrateurs/procedures/en.yml
@@ -67,6 +67,10 @@ en:
         dpd_part_4: How to do ? You can either send him the link to the procedure on test stage by email, or name him "administrator". In any case, publish your approach only after having had his opinion.
         back_to_procedure: 'Cancel and return to the procedure page'
         submit: Publish
+      check_path:
+        path_not_available:
+          owner: This URL is identical to another of your published procedures. If you publish this procedure, the old one will be unpublished and will no longer be accessible to the public.
+          not_owner: This URL is identical to another procedure, you must modify it.
     autosave_notice:
       form_saved: "Form saved"
       form_error: "Form in error"
diff --git a/config/locales/views/administrateurs/procedures/fr.yml b/config/locales/views/administrateurs/procedures/fr.yml
index e032d889c..930d08247 100644
--- a/config/locales/views/administrateurs/procedures/fr.yml
+++ b/config/locales/views/administrateurs/procedures/fr.yml
@@ -67,6 +67,10 @@ fr:
         dpd_part_4: Comment faire ? Vous pouvez soit lui communiquer par email le lien vers la démarche en test, ou bien le nommer « administrateur ». Dans tous les cas, ne publiez votre démarche qu’après avoir eu son avis.
         back_to_procedure: 'Annuler et revenir à la page de la démarche'
         submit: Publier
+      check_path:
+        path_not_available:
+          owner: Cette url est identique à celle d’une autre de vos démarches publiées. Si vous publiez cette démarche, l’ancienne sera dépubliée et ne sera plus accessible au public.
+          not_owner: Cette url est identique à celle d’une autre démarche, vous devez la modifier afin de pouvoir publier votre démarche.
     autosave_notice:
       form_saved: "Formulaire enregistré"
       form_error: "Formulaire en erreur"
diff --git a/config/routes.rb b/config/routes.rb
index 1ea777bb2..c3e1cd334 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -603,6 +603,7 @@ Rails.application.routes.draw do
       put 'clone'
       put 'archive'
       get 'publication' => 'procedures#publication', as: :publication
+      get 'check_path' => 'procedures#check_path', as: :check_path
       put 'publish' => 'procedures#publish', as: :publish
       put 'reset_draft' => 'procedures#reset_draft', as: :reset_draft
       put 'publish_revision' => 'procedures#publish_revision', as: :publish_revision
diff --git a/spec/models/procedure_spec.rb b/spec/models/procedure_spec.rb
index ac58afabf..9834a46e5 100644
--- a/spec/models/procedure_spec.rb
+++ b/spec/models/procedure_spec.rb
@@ -1331,7 +1331,7 @@ describe Procedure do
         create(:procedure, aasm_state: :publiee, path: 'inscription-au-college', administrateurs: procedure.administrateurs, zones: [create(:zone)])
       end
 
-      it { is_expected.to eq 'inscription-au-college' }
+      it { is_expected.to eq 'inscription-au-college-2' }
     end
   end
 
diff --git a/spec/system/administrateurs/procedure_cloning_spec.rb b/spec/system/administrateurs/procedure_cloning_spec.rb
index bffe9c4d8..3e733fc61 100644
--- a/spec/system/administrateurs/procedure_cloning_spec.rb
+++ b/spec/system/administrateurs/procedure_cloning_spec.rb
@@ -52,7 +52,10 @@ describe 'As an administrateur I wanna clone a procedure', js: true do
 
       # then publish
       find('#publish-procedure-link').click
-      expect(find_field('procedure_path').value).to eq 'libelle-de-la-procedure'
+      expect(find_field('procedure_path').value).to eq 'libelle-de-la-procedure-2'
+      fill_in 'procedure_path', with: 'libelle-de-la-procedure'
+      expect(page).to have_content 'Si vous publiez cette démarche, l’ancienne sera dépubliée et ne sera plus accessible au public.'
+
       fill_in 'lien_site_web', with: 'http://some.website'
       click_on 'publish'
 
@@ -87,7 +90,9 @@ describe 'As an administrateur I wanna clone a procedure', js: true do
 
       # then publish
       find('#publish-procedure-link').click
-      expect(find_field('procedure_path').value).to eq 'libelle-de-la-procedure'
+      expect(find_field('procedure_path').value).to eq 'libelle-de-la-procedure-2'
+      fill_in 'procedure_path', with: 'libelle-de-la-procedure'
+      expect(page).to have_content 'Si vous publiez cette démarche, l’ancienne sera dépubliée et ne sera plus accessible au public.'
       fill_in 'lien_site_web', with: 'http://some.website'
       click_on 'publish'
 
diff --git a/spec/system/administrateurs/procedure_publish_spec.rb b/spec/system/administrateurs/procedure_publish_spec.rb
index a46af433e..f1109ec4c 100644
--- a/spec/system/administrateurs/procedure_publish_spec.rb
+++ b/spec/system/administrateurs/procedure_publish_spec.rb
@@ -4,6 +4,8 @@ describe 'Publishing a procedure', js: true do
   include ProcedureSpecHelper
 
   let(:administrateur) { create(:administrateur) }
+  let(:other_administrateur) { create(:administrateur) }
+
   let(:instructeurs) { [administrateur.user.instructeur] }
   let!(:procedure) do
     create(:procedure_with_dossiers,
@@ -14,6 +16,16 @@ describe 'Publishing a procedure', js: true do
       instructeurs: instructeurs,
       administrateur: administrateur)
   end
+  let!(:other_procedure) do
+    create(:procedure_with_dossiers,
+      :published,
+      :with_path,
+      :with_type_de_champ,
+      :with_service,
+      :with_zone,
+      instructeurs: instructeurs,
+      administrateur: other_administrateur)
+  end
 
   before do
     login_as administrateur.user, scope: :user
@@ -70,6 +82,19 @@ describe 'Publishing a procedure', js: true do
         expect(page).to have_button('Publier', disabled: true)
       end
     end
+
+    context 'when the procedure has the same path as another procedure from another admin ' do
+      scenario 'an error message prevents the publication' do
+        expect(find_field('procedure_path').value).to eq procedure.path
+        fill_in 'procedure_path', with: other_procedure.path
+        expect(page).to have_content 'vous devez la modifier afin de pouvoir publier votre démarche'
+
+        fill_in 'lien_site_web', with: 'http://some.website'
+        within('form') { click_on 'Publier' }
+
+        expect(page).to have_text('Le champ « Lien public » est déjà utilisé par une démarche.')
+      end
+    end
   end
 
   context 'when a procedure is closed' do