diff --git a/app/models/export_template.rb b/app/models/export_template.rb
index eaa753415..5345116bb 100644
--- a/app/models/export_template.rb
+++ b/app/models/export_template.rb
@@ -3,6 +3,7 @@ class ExportTemplate < ApplicationRecord
 
   belongs_to :groupe_instructeur
   has_one :procedure, through: :groupe_instructeur
+  validates_with ExportTemplateValidator
 
   DOSSIER_STATE = Dossier.states.fetch(:en_construction)
 
diff --git a/app/validators/export_template_validator.rb b/app/validators/export_template_validator.rb
new file mode 100644
index 000000000..1f3475040
--- /dev/null
+++ b/app/validators/export_template_validator.rb
@@ -0,0 +1,54 @@
+class ExportTemplateValidator < ActiveModel::Validator
+  def validate(record)
+    validate_default_dossier_directory(record)
+    validate_pdf_name(record)
+    validate_pjs(record)
+  end
+
+  private
+
+  def validate_default_dossier_directory(record)
+    mention = attribute_content_mention(record, :default_dossier_directory)
+    if mention&.fetch("id", nil) != "dossier_number"
+      record.errors.add :tiptap_default_dossier_directory, :dossier_number_mandatory
+    end
+  end
+
+  def validate_pdf_name(record)
+    if attribute_content_text(record, :pdf_name).blank? && attribute_content_mention(record, :pdf_name).blank?
+      record.errors.add :tiptap_pdf_name, :blank
+    end
+  end
+
+  def attribute_content_text(record, attribute)
+    attribute_content(record, attribute)&.find { |elem| elem["type"] == "text" }&.fetch("text", nil)
+  end
+
+  def attribute_content_mention(record, attribute)
+    attribute_content(record, attribute)&.find { |elem| elem["type"] == "mention" }&.fetch("attrs", nil)
+  end
+
+  def attribute_content(record, attribute)
+    content = record.content[attribute.to_s]&.fetch("content", nil)
+    if content.is_a?(Array)
+      content.first&.fetch("content", nil)
+    end
+  end
+
+  def validate_pjs(record)
+    record.content["pjs"]&.each do |pj|
+      pj_sym = pj.symbolize_keys
+      libelle = record.groupe_instructeur.procedure.pieces_jointes_exportables_list.find { _1.stable_id.to_s == pj_sym[:stable_id] }&.libelle&.to_sym
+      validate_content(record, pj_sym[:path], libelle)
+    end
+  end
+
+  def validate_content(record, attribute_content, attribute)
+    if attribute_content.nil? || attribute_content["content"].nil? ||
+        attribute_content["content"].first.nil? ||
+        attribute_content["content"].first["content"].nil? ||
+        (attribute_content["content"].first["content"].find { |elem| elem["text"].blank? } && attribute_content["content"].first["content"].find { |elem| elem["type"] == "mention" }["attrs"].blank?)
+      record.errors.add attribute, I18n.t(:blank, scope: 'errors.messages')
+    end
+  end
+end
diff --git a/spec/models/export_template_spec.rb b/spec/models/export_template_spec.rb
index 9a2a29aaf..d8df04760 100644
--- a/spec/models/export_template_spec.rb
+++ b/spec/models/export_template_spec.rb
@@ -135,4 +135,123 @@ describe ExportTemplate do
       end
     end
   end
+
+  describe '#valid?' do
+    let(:subject) { build(:export_template, content:) }
+    let(:ddd_text) { "DoSSIER" }
+    let(:mention) { { "type" => "mention", "attrs" => { "id" => "dossier_number", "label" => "numéro du dossier" } } }
+    let(:ddd_mention) { mention }
+    let(:pdf_text) { "export" }
+    let(:pdf_mention) { mention }
+    let(:pj_text) { "_pj" }
+    let(:pj_mention) { mention }
+    let(:content) do
+      {
+        "pdf_name" => {
+          "type" => "doc",
+          "content" => [
+            { "type" => "paragraph", "content" => [{ "text" => pdf_text, "type" => "text" }, pdf_mention] }
+          ]
+        },
+        "default_dossier_directory" => {
+          "type" => "doc",
+          "content" => [
+            { "type" => "paragraph", "content" => [{ "text" => ddd_text, "type" => "text" }, ddd_mention] }
+          ]
+        },
+        "pjs" =>
+        [
+          { path: { "type" => "doc", "content" => [{ "type" => "paragraph", "content" => [pj_mention, { "text" => pj_text, "type" => "text" }] }] }, stable_id: "3" }
+        ]
+      }
+    end
+
+    context 'with valid default dossier directory' do
+      it 'has no error for default_dossier_directory' do
+        expect(subject.valid?).to be_truthy
+        expect(subject.errors[:default_dossier_directory]).not_to be_present
+      end
+    end
+
+    context 'with no ddd text' do
+      let(:ddd_text) { " " }
+      context 'with mention' do
+        let(:ddd_mention) { { "type" => "mention", "attrs" => { "id" => "dossier_number", "label" => "numéro du dossier" } } }
+        it 'has no error for default_dossier_directory' do
+          expect(subject.valid?).to be_truthy
+          expect(subject.errors[:default_dossier_directory]).not_to be_present
+        end
+      end
+
+      context 'without mention' do
+        let(:ddd_mention) { { "type" => "mention", "attrs" => {} } }
+        it "add error for default_dossier_directory" do
+          expect(subject.valid?).to be_falsey
+          expect(subject.errors[:default_dossier_directory]).to be_present
+        end
+      end
+
+      context 'with mention but without numéro de dossier' do
+        let(:ddd_mention) { { "type" => "mention", "attrs" => { "id" => 'dossier_service_name', "label" => "nom du service" } } }
+        it "add error for default_dossier_directory" do
+          expect(subject.valid?).to be_falsey
+          expect(subject.errors[:default_dossier_directory]).to be_present
+        end
+      end
+    end
+
+    context 'with valid pdf name' do
+      it 'has no error for pdf name' do
+        expect(subject.valid?).to be_truthy
+        expect(subject.errors[:pdf_name]).not_to be_present
+      end
+    end
+
+    context 'with pdf text and without mention' do
+      let(:pdf_text) { "export" }
+      let(:pdf_mention) { { "type" => "mention", "attrs" => {} } }
+
+      it "add no error" do
+        expect(subject.valid?).to be_truthy
+      end
+    end
+
+    context 'with no pdf text' do
+      let(:pdf_text) { " " }
+
+      context 'with mention' do
+        it 'has no error for default_dossier_directory' do
+          expect(subject.valid?).to be_truthy
+          expect(subject.errors[:default_dossier_directory]).not_to be_present
+        end
+      end
+
+      context 'without mention' do
+        let(:pdf_mention) { { "type" => "mention", "attrs" => {} } }
+        it "add error for pdf name" do
+          expect(subject.valid?).to be_falsey
+          expect(subject.errors[:pdf_name]).to be_present
+        end
+      end
+    end
+
+    context 'with no pj text' do
+      let(:pj_text) { " " }
+
+      context 'with mention' do
+        it 'has no error for pj' do
+          expect(subject.valid?).to be_truthy
+          expect(subject.errors[:pj_3]).not_to be_present
+        end
+      end
+
+      context 'without mention' do
+        let(:pj_mention) { { "type" => "mention", "attrs" => {} } }
+        it "add error for pj" do
+          expect(subject.valid?).to be_falsey
+          expect(subject.errors[:pj_3]).to be_present
+        end
+      end
+    end
+  end
 end