diff --git a/src/caoscrawler/identifiable_adapters.py b/src/caoscrawler/identifiable_adapters.py
index 89d9384766f77312a7b128ebe4db59722340b5f7..75de1a3249a3b86ccd6c79deef8fc4b11f2540fd 100644
--- a/src/caoscrawler/identifiable_adapters.py
+++ b/src/caoscrawler/identifiable_adapters.py
@@ -148,7 +148,7 @@ identifiabel, identifiable and identified record) for a Record.
             query_string = query_string[:-len(" AND ")]
         return query_string
 
-    def check_identifying_props(self, node, raise_exception=True):
+    def check_identifying_props(self, node: SyncNode, raise_exception: bool = True):
         """checks whether all identifying properties exist and raises an error if
         that's not the case. It furthermore raises an error if "name" is part of
         the identifiable, but the node does not have a name.
@@ -180,6 +180,8 @@ identifiabel, identifiable and identified record) for a Record.
                 else:
                     continue
 
+            # multiple occurances are ok here. We deal with that when actually creating an
+            # identifiable (IDs of referenced Entities might need to get resolved first).
             if (len([el for el in node.properties if el.name.lower() == prop.name.lower()]) == 0):
                 if raise_exception:
                     i = MissingIdentifyingProperty(f"The property {prop.name} is missing.")
diff --git a/src/caoscrawler/sync_graph.py b/src/caoscrawler/sync_graph.py
index 738b07737c17bf538e0908c545bf8e60ed3e55bb..418baa543235542d81c119acc331ea718bf65b2a 100644
--- a/src/caoscrawler/sync_graph.py
+++ b/src/caoscrawler/sync_graph.py
@@ -162,7 +162,7 @@ class SyncGraph():
         # Thus, it must be possible to create an
         # identifiable which is checked using the following function:
         for node in self.unchecked:
-            self.identifiableAdapter.check_identifying_props(node)
+            self.identifiableAdapter.all_identifying_properties_exist(node)
 
     def set_id_of_node(self, node: SyncNode, node_id: Optional[str] = None):
         """sets the ID attribute of the given SyncNode to node_id.
@@ -304,7 +304,7 @@ class SyncGraph():
         if no identifiable is given, the identifiable is retrieved from the identifiable adapter
         """
         if identifiable is None:
-            self.identifiableAdapter.check_identifying_props(node)
+            self.identifiableAdapter.all_identifying_properties_exist(node)
             identifiable = self.identifiableAdapter.get_identifiable(
                 node, self.backward_id_referenced_by[id(node)])
         node.identifiable = identifiable
@@ -570,7 +570,8 @@ class SyncGraph():
         Last review by Alexander Schlemmer on 2024-05-24.
         """
         return (node.identifiable is None and not self._identity_relies_on_unchecked_entity(node)
-                and self.identifiableAdapter.check_identifying_props(node, raise_exception=False))
+                and self.identifiableAdapter.all_identifying_properties_exist(
+                    node, raise_exception=False))
 
     def _initialize_nodes(self, entities: list[db.Entity]):
         """ create initial set of SyncNodes from provided Entity list"""