diff --git a/backend/ebios_rm/migrations/0005_remove_operationalscenario_attack_paths_and_more.py b/backend/ebios_rm/migrations/0005_remove_operationalscenario_attack_paths_and_more.py
new file mode 100644
index 000000000..2170a60c5
--- /dev/null
+++ b/backend/ebios_rm/migrations/0005_remove_operationalscenario_attack_paths_and_more.py
@@ -0,0 +1,59 @@
+# Generated by Django 5.1.4 on 2024-12-16 11:59
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("ebios_rm", "0004_remove_roto_pertinence_alter_roto_feared_events"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="operationalscenario",
+            name="attack_paths",
+        ),
+        migrations.RemoveField(
+            model_name="operationalscenario",
+            name="description",
+        ),
+        migrations.AddField(
+            model_name="attackpath",
+            name="name",
+            field=models.CharField(default="", max_length=200, verbose_name="Name"),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name="attackpath",
+            name="ref_id",
+            field=models.CharField(blank=True, max_length=100),
+        ),
+        migrations.AddField(
+            model_name="operationalscenario",
+            name="attack_path",
+            field=models.OneToOneField(
+                default="",
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="operational_scenario",
+                to="ebios_rm.attackpath",
+                verbose_name="Attack path",
+            ),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name="operationalscenario",
+            name="operating_modes_description",
+            field=models.TextField(
+                default="",
+                help_text="Description of the operating modes of the operational scenario",
+                verbose_name="Operating modes description",
+            ),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name="attackpath",
+            name="description",
+            field=models.TextField(blank=True, null=True, verbose_name="Description"),
+        ),
+    ]
diff --git a/backend/ebios_rm/models.py b/backend/ebios_rm/models.py
index dbe56bfb8..a93f1d4b3 100644
--- a/backend/ebios_rm/models.py
+++ b/backend/ebios_rm/models.py
@@ -363,7 +363,7 @@ def residual_criticality(self):
         )
 
 
-class AttackPath(AbstractBaseModel, FolderMixin):
+class AttackPath(NameDescriptionMixin, FolderMixin):
     ebios_rm_study = models.ForeignKey(
         EbiosRMStudy,
         verbose_name=_("EBIOS RM study"),
@@ -382,7 +382,7 @@ class AttackPath(AbstractBaseModel, FolderMixin):
         help_text=_("Stakeholders leveraged by the attack path"),
     )
 
-    description = models.TextField(verbose_name=_("Description"))
+    ref_id = models.CharField(max_length=100, blank=True)
     is_selected = models.BooleanField(verbose_name=_("Is selected"), default=False)
     justification = models.TextField(verbose_name=_("Justification"), blank=True)
 
@@ -406,11 +406,12 @@ class OperationalScenario(AbstractBaseModel, FolderMixin):
         related_name="operational_scenarios",
         on_delete=models.CASCADE,
     )
-    attack_paths = models.ManyToManyField(
+    attack_path = models.OneToOneField(
         AttackPath,
-        verbose_name=_("Attack paths"),
-        related_name="operational_scenarios",
-        help_text=_("Attack paths that are pertinent to the operational scenario"),
+        verbose_name=_("Attack path"),
+        on_delete=models.CASCADE,
+        related_name="operational_scenario",
+        blank=False,
     )
     threats = models.ManyToManyField(
         Threat,
@@ -420,7 +421,10 @@ class OperationalScenario(AbstractBaseModel, FolderMixin):
         help_text=_("Threats leveraged by the operational scenario"),
     )
 
-    description = models.TextField(verbose_name=_("Description"))
+    operating_modes_description = models.TextField(
+        verbose_name=_("Operating modes description"),
+        help_text=_("Description of the operating modes of the operational scenario"),
+    )
     likelihood = models.SmallIntegerField(default=-1, verbose_name=_("Likelihood"))
     is_selected = models.BooleanField(verbose_name=_("Is selected"), default=False)
     justification = models.TextField(verbose_name=_("Justification"), blank=True)
diff --git a/backend/ebios_rm/serializers.py b/backend/ebios_rm/serializers.py
index 3eed45bf0..6b69798b9 100644
--- a/backend/ebios_rm/serializers.py
+++ b/backend/ebios_rm/serializers.py
@@ -157,7 +157,7 @@ class OperationalScenarioReadSerializer(BaseModelSerializer):
     str = serializers.CharField(source="__str__")
     ebios_rm_study = FieldsRelatedField()
     folder = FieldsRelatedField()
-    attack_paths = FieldsRelatedField(many=True)
+    attack_path = FieldsRelatedField()
     threats = FieldsRelatedField(many=True)
     likelihood = serializers.JSONField(source="get_likelihood_display")
 
diff --git a/frontend/src/lib/utils/crud.ts b/frontend/src/lib/utils/crud.ts
index b9a6d9357..e6b4c3f30 100644
--- a/frontend/src/lib/utils/crud.ts
+++ b/frontend/src/lib/utils/crud.ts
@@ -700,7 +700,7 @@ export const URL_MODEL_MAP: ModelMap = {
 		foreignKeyFields: [
 			{ field: 'ebios_rm_study', urlModel: 'ebios-rm' },
 			{ field: 'threats', urlModel: 'threats' },
-			{ field: 'attack_paths', urlModel: 'attack-paths' }
+			{ field: 'attack_path', urlModel: 'attack-paths' }
 		],
 		selectFields: [{ field: 'likelihood', valueType: 'number' }]
 	}
diff --git a/frontend/src/lib/utils/schemas.ts b/frontend/src/lib/utils/schemas.ts
index 7872fa503..d45a34522 100644
--- a/frontend/src/lib/utils/schemas.ts
+++ b/frontend/src/lib/utils/schemas.ts
@@ -456,7 +456,7 @@ export const AttackPathSchema = z.object({
 
 export const operationalScenarioSchema = z.object({
 	ebios_rm_study: z.string(),
-	attack_paths: z.string().uuid().array(),
+	attack_path: z.string().uuid(),
 	threats: z.string().uuid().optional().array().optional(),
 	description: z.string(),
 	likelihood: z.number().optional().default(-1),