diff --git a/aidants_connect_habilitation/forms.py b/aidants_connect_habilitation/forms.py
index aac589ee0..3cab1bd10 100644
--- a/aidants_connect_habilitation/forms.py
+++ b/aidants_connect_habilitation/forms.py
@@ -17,7 +17,7 @@
 from phonenumber_field.formfields import PhoneNumberField
 from phonenumber_field.widgets import PhoneNumberInternationalFallbackWidget
 
-from aidants_connect.common.constants import RequestOriginConstants
+from aidants_connect.common.constants import MessageStakeholders, RequestOriginConstants
 from aidants_connect.common.forms import (
     PatchedErrorList,
     PatchedErrorListForm,
@@ -29,6 +29,7 @@
     Manager,
     OrganisationRequest,
     PersonWithResponsibilities,
+    RequestMessage,
 )
 from aidants_connect_web.models import OrganisationType
 
@@ -372,6 +373,9 @@ class ValidationForm(PatchedForm):
         "Aidants Connect. Le responsable Aidants Connect ainsi que les aidants "
         "à habiliter ne sont pas des élus.",
     )
+    message_content = CharField(
+        label="Votre message", required=False, widget=Textarea(attrs={"rows": 4})
+    )
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
@@ -382,6 +386,12 @@ def save(
         self, organisation: OrganisationRequest, commit=True
     ) -> OrganisationRequest:
         organisation.prepare_request_for_ac_validation(self.cleaned_data)
+        if self.cleaned_data["message_content"] != "":
+            RequestMessage.objects.create(
+                organisation=organisation,
+                sender=MessageStakeholders.ISSUER.name,
+                content=self.cleaned_data["message_content"],
+            )
         return organisation
 
     save.alters_data = True
diff --git a/aidants_connect_habilitation/templates/validation_form.html b/aidants_connect_habilitation/templates/validation_form.html
index 7a9c25dc2..4fce47d7f 100644
--- a/aidants_connect_habilitation/templates/validation_form.html
+++ b/aidants_connect_habilitation/templates/validation_form.html
@@ -15,32 +15,29 @@ <h2>Récapitulatif de la demande</h2>
       Il est possible de les modifier si besoin.
     </p>
     {% include "_display_org_request.html" with organisation=organisation show_all_buttons=True %}
-    <!--
     <h3>Information complémentaire</h3>
+    <form method="post">
     <div class="fr-grid-row fr-grid-row--gutters">
       <div class="fr-col-12 fr-col-md-8">
         <div class="shadowed">
           <h4 class="h3">Une question ? Une précision ?</h4>
           <p class="more-info-messages">Si vous souhaitez ajouter une précision ou nous poser une question, c’est ici que ça se passe ! Saisissez votre message ci-dessous, il nous sera envoyé avec votre demande.</p>
           <div class="fr-grid-row">
-            <div class="fr-col-4">
-              Votre message
-            </div>
+            <label class="fr-col-4" for="{{ form.content.id_for_label }}">Votre message</label>
             <div class="fr-col-8">
-              Message box
+              {% csrf_token %}
+              {{ form.message_content }}
             </div>
           </div>
         </div>
       </div>
     </div>
-    -->
     <h3>Validation de la demande</h3>
     <div class="fr-grid-row fr-grid-row--gutters">
       <div class="fr-col-12 fr-col-md-8">
         <div class="shadowed">
           <h4 class="h2">Modalités d'utilisation</h4>
-          <form method="post">
-            {% csrf_token %}
+
             {{ form.non_field_errors }}
             {% checkbox_fr_grid_row form.cgu %}
             {% checkbox_fr_grid_row form.dpo %}
@@ -53,10 +50,10 @@ <h4 class="h2">Modalités d'utilisation</h4>
               </a>
               <button class="primary" type="submit">Soumettre la demande</button>
             </div>
-          </form>
         </div>
       </div>
     </div>
+    </form>
     {% include "_more-info.html" %}
   </div>{# fr-container #}
 {% endblock %}
diff --git a/aidants_connect_habilitation/tests/test_forms.py b/aidants_connect_habilitation/tests/test_forms.py
index b50c8ceb1..1216e28fb 100644
--- a/aidants_connect_habilitation/tests/test_forms.py
+++ b/aidants_connect_habilitation/tests/test_forms.py
@@ -3,6 +3,7 @@
 from django.test import TestCase
 
 from aidants_connect.common.constants import (
+    MessageStakeholders,
     RequestOriginConstants,
     RequestStatusConstants,
 )
@@ -217,6 +218,7 @@ def test_form_valid_works(self):
         form = ValidationForm(
             data={name: True for name in TestValidationFormForm.names_attr}
         )
+        form.data["message_content"] = "Bonjour"
         form.is_valid()
 
         orga = form.save(organisation=orga_request)
@@ -227,3 +229,5 @@ def test_form_valid_works(self):
             self.assertTrue(getattr(orga, name))
             for name in TestValidationFormForm.names_attr
         ]
+        self.assertEqual(orga.messages.all()[0].content, "Bonjour")
+        self.assertEqual(orga.messages.all()[0].sender, MessageStakeholders.ISSUER.name)
diff --git a/aidants_connect_habilitation/views.py b/aidants_connect_habilitation/views.py
index 72d3e8508..9424ea7ca 100644
--- a/aidants_connect_habilitation/views.py
+++ b/aidants_connect_habilitation/views.py
@@ -384,7 +384,7 @@ def get_success_url(self):
 
     def form_valid(self, form):
         message: RequestMessage = form.save(commit=False)
-        message.sender = MessageStakeholders.ISSUER.value
+        message.sender = MessageStakeholders.ISSUER.name
         message.organisation = self.organisation
         message.save()