diff --git a/passerelle/contrib/toulouse_maelis/models.py b/passerelle/contrib/toulouse_maelis/models.py
index e1619918..ef533a46 100644
--- a/passerelle/contrib/toulouse_maelis/models.py
+++ b/passerelle/contrib/toulouse_maelis/models.py
@@ -3282,6 +3282,23 @@ class ToulouseMaelis(BaseResource, HTTPResource):
         post={'request_body': {'schema': {'application/json': family_schemas.NURSERY_DEMAND_SCHEMA}}},
     )
     def create_nursery_demand(self, request, post_data):
+        apeIndicators = self.get_referential('ApeIndicator')
+        for group in apeIndicators:
+            if group['id'] == 'INDI_APE_ENF':
+                key = 'child_indicators'
+            elif group['id'] == 'INDI_APE_FAM':
+                key = 'family_indicators'
+            else:
+                key = 'demand_indicators'
+            expected_codes = [x['code'] for x in group['indicatorList']]
+            for i, item in enumerate(post_data.get(key) or []):
+                if item['code'] not in expected_codes:
+                    raise APIError(
+                        "%s/%i/code key value '%s' do not belong to APE '%s' indicators"
+                        % (key, i, item['code'], group['id'][-3:])
+                    )
+                item['isActive'] = self.encode_bool(item['isActive'])
+
         child_data = {}
         if post_data.get('child_id'):
             child_data['numPerson'] = post_data['child_id']
diff --git a/tests/test_toulouse_maelis.py b/tests/test_toulouse_maelis.py
index 03fd712c..64e36a60 100644
--- a/tests/test_toulouse_maelis.py
+++ b/tests/test_toulouse_maelis.py
@@ -7678,7 +7678,20 @@ def test_get_nursery_geojson(con, app):
 
 
 def test_create_nursery_demand(ape_service, con, app):
-    ape_service.add_soap_response('addApeBook', get_xml_file('R_create_nursery_demand.xml'))
+    def request_check(request):
+        assert [(x['code'], x['isActive']) for x in request.child['indiPersList']] == [
+            ('APE_ALLO', True),
+            ('APE-MINE', False),
+        ]
+        assert [(x['code'], x['isActive']) for x in request.apeBook['indiResapeList']] == [
+            ('APE_FIRSTC', True),
+            ('APE_FRAT', False),
+        ]
+        assert [(x['code'], x['isActive']) for x in request['indiFamList']] == [('APE_COMPO1', False)]
+
+    ape_service.add_soap_response(
+        'addApeBook', get_xml_file('R_create_nursery_demand.xml'), request_check=request_check
+    )
     data = {
         'family_id': '322425',
         'accept_other_nurseries': False,
@@ -7691,14 +7704,14 @@ def test_create_nursery_demand(ape_service, con, app):
         'number_of_days': '1',
         'child_indicators/0/code': 'APE_ALLO',
         'child_indicators/0/isActive': True,
-        'child_indicators/1/code': 'code2',
+        'child_indicators/1/code': 'APE-MINE',
         'child_indicators/1/isActive': False,
-        'demand_indicators/0/code': 'APE_ALLO',
-        'demand_indicators/0/isActive': True,
-        'demand_indicators/1/code': 'APE_ALLO',
-        'demand_indicators/1/isActive': False,
-        'family_indicators/0/code': 'APE_ALLO',
-        'family_indicators/0/isActive': False,
+        'demand_indicators/0/code': 'APE_FIRSTC',
+        'demand_indicators/0/isActive': 'Oui',
+        'demand_indicators/1/code': 'APE_FRAT',
+        'demand_indicators/1/isActive': 0,
+        'family_indicators/0/code': 'APE_COMPO1',
+        'family_indicators/0/isActive': 'False',
         'start_hour_Mon': '09:00',
         'end_hour_Mon': '18:00',
         'nursery1/idActivity': 'M10000000004',
@@ -7713,3 +7726,20 @@ def test_create_nursery_demand(ape_service, con, app):
     data['start_hour_Tue'] = ''
     resp = app.post_json(url, params=data)
     assert resp.json['err'] == 0
+
+
+def test_create_nursery_demand_wrong_referential_key_error(con, app):
+    url = get_endpoint('create-nursery-demand')
+    params = {
+        'family_id': '322425',
+        'start_date': '2023-04-01',
+        'family_indicators/0/code': 'APE_ALLO',
+        'family_indicators/0/isActive': 'False',
+    }
+
+    resp = app.post_json(url, params=params)
+    assert resp.json['err'] == 1
+    assert (
+        resp.json['err_desc']
+        == "family_indicators/0/code key value 'APE_ALLO' do not belong to APE 'FAM' indicators"
+    )