diff --git a/meteor/api/sanitizer.py b/meteor/api/sanitizer.py
index 39c2eb6..98da8ac 100644
--- a/meteor/api/sanitizer.py
+++ b/meteor/api/sanitizer.py
@@ -229,12 +229,7 @@ def _preprocess_facets(self):
                     self.facets[predicate].update({facet: self.data[key]})
                 else:
                     self.facets[predicate] = {facet: self.data[key]}
-
-            # for list predicates, we track facets via the value
-            if '@' in key:
-                val, facet = key.split('@')
-                self.facets[val] = {facet: self.data[key]}
-
+        
     def _postprocess_list_facets(self):
         for ll in self.entry.values():
             if isinstance(ll, list):
diff --git a/meteor/flaskdgraph/dgraph_types.py b/meteor/flaskdgraph/dgraph_types.py
index 301032b..d6e85da 100644
--- a/meteor/flaskdgraph/dgraph_types.py
+++ b/meteor/flaskdgraph/dgraph_types.py
@@ -455,12 +455,28 @@ def validate(self, data, facets: dict=None, **kwargs):
         # preferably this method should return a Scalar object
         
         if not self.overwrite and data is None:
-            raise InventoryValidationError(f"Tried to delete predicate <{self.label}> by supplying null value.")
+            raise InventoryValidationError(f"Tried to delete predicate <{self.predicate}> by supplying null value.")
         
         data = self.validation_hook(data)
         
         if isinstance(data, (list, set, tuple)):
-            return [Scalar(item, facets=facets) if isinstance(item, (str, int, datetime.datetime, datetime.date)) else item for item in data]
+            _data = []
+            for item in data:
+                if isinstance(item, (str, int, datetime.datetime, datetime.date)):
+                    _data.append(Scalar(item))
+                else:
+                    _data.append(item)
+            
+            if facets:
+                assert isinstance(facets, dict), InventoryValidationError(f"Error in <{self.predicate}>: Facets provided in wrong format!")
+                for key, val in facets.items():
+                    assert isinstance(val, dict), InventoryValidationError(f"Error in <{self.predicate}>: Facets provided in wrong format!")
+                    for counter, subval in val.items():
+                        _data[int(counter)].update_facets({key: subval})
+
+            return _data
+
+            # return [Scalar(item, facets=facets) if isinstance(item, (str, int, datetime.datetime, datetime.date)) else item for item in data]
         elif isinstance(data, (str, int, datetime.datetime, datetime.date)):
             return Scalar(data, facets=facets)
         else:
@@ -1609,6 +1625,51 @@ def openapi_component(self) -> dict:
             o['description'] =  self.description
         return o
 
+
+class ListDatetime(DateTime):
+
+    dgraph_predicate_type = "[datetime]"
+    _type = list
+
+    def validation_hook(self, data):
+        if data is None:
+            return None
+        if isinstance(data, (list, tuple, set)):
+            _data = []
+            for val in data:
+                try:
+                    _data.append(dateparser.parse(val))
+                except:
+                    raise InventoryValidationError(
+                        f'Error in <{self.predicate}> Cannot parse provided value to date: {data}')
+            return _data
+        if isinstance(data, (datetime.date, datetime.datetime)):
+            return data
+        elif isinstance(data, int):
+            try:
+                return datetime.date(year=data, month=1, day=1)
+            except:
+                pass
+        try:
+            return dateparser.parse(data)
+        except:
+            raise InventoryValidationError(
+                f'Error in <{self.predicate}> Cannot parse provided value to date: {data}')
+
+
+    @property
+    def openapi_component(self) -> dict:
+        o = {'type': "array",
+             'items': {
+                'type': 'string',
+                'format': "date-time"
+                } 
+             }
+        if self.description:
+            o['description'] =  self.description
+        return o
+
+
 class Year(DateTime):
 
     dgraph_predicate_type = 'datetime'
@@ -1622,7 +1683,7 @@ def validation_hook(self, data):
                 return datetime.datetime(year=int(data), month=1, day=1)
             except:
                 raise InventoryValidationError(
-                    f'Cannot parse provided value to year: {data}')
+                    f'Error in <{self.predicate}>: Cannot parse provided value to year: {data}')
 
     @property
     def wtf_field(self) -> IntegerField:
@@ -1694,7 +1755,7 @@ def validation_hook(self, data):
             return data > 0
         else:
             raise InventoryValidationError(
-                f'Cannot evaluate provided value as bool: {data}!')
+                f'Error in <{self.predicate}>: Cannot evaluate provided value as bool: {data}!')
 
     def query_filter(self, vals, **kwargs) -> str:
         if isinstance(vals, list):
diff --git a/meteor/main/model.py b/meteor/main/model.py
index dfb480f..0d81366 100644
--- a/meteor/main/model.py
+++ b/meteor/main/model.py
@@ -553,8 +553,7 @@ class NewsSource(Entry):
         queryable=True,
     )
 
-    audience_size = ListYear(
-        edit=False,
+    audience_size = ListDatetime(
         facets=[
             Facet(
                 "unit",
diff --git a/tests/test_api_sanitizer.py b/tests/test_api_sanitizer.py
index 9a94643..e482103 100644
--- a/tests/test_api_sanitizer.py
+++ b/tests/test_api_sanitizer.py
@@ -99,10 +99,11 @@ def test_new_entry(self):
     def test_list_facets(self):
         mock_data = {
             'name': 'Test',
-            'alternate_names': 'Jay Jay,Jules,JB',
-            'Jay Jay@kind': 'first',
-            'Jules@kind': 'official',
-            'JB@kind': 'CS-GO'
+            'alternate_names': ['Jay Jay' , 'Jules', 'JB'],
+            'alternate_names|kind': {"0": 'first',
+                                     "1": 'official',
+                                     "2": "CS-GO"
+                                     }
         }
 
         with self.app.app_context():
@@ -298,7 +299,16 @@ def test_draft_source(self):
                         'contains_ads': 'non subscribers',
                         'publishes_org': self.derstandard_mbh_uid,
                         'related_news_sources': [self.falter_print_uid],
-                        'entry_review_status': 'pending'}
+                        'entry_review_status': 'pending',
+                        'audience_size': ["2024-06-15T21:20:13",
+                                          "2023-05-14",
+                                          "2022-04"],
+                        'audience_size|unit': {"0": "subscribers",
+                                               "1": "subscribers",
+                                               "2": "subscribers"},
+                        'audience_size|count': {"0": 100,
+                                                "1": 200,
+                                                "2": 300}}
 
         with self.app.app_context():
             # test if random user can edit