diff --git a/kgforge/core/commons/execution.py b/kgforge/core/commons/execution.py
index a4483b38..e7f117c1 100644
--- a/kgforge/core/commons/execution.py
+++ b/kgforge/core/commons/execution.py
@@ -155,7 +155,7 @@ def _run_one(fun: Callable, resource: Resource, exception: Type[RunException], i
         if monitored_status:
             setattr(resource, monitored_status, status)
 
-        resource.set_last_action(Action(fun.__name__, succeeded, exception))
+        resource._last_action = Action(fun.__name__, succeeded, exception)
 
         if not catch_exceptions and exception:
             raise exception
diff --git a/kgforge/core/resource.py b/kgforge/core/resource.py
index a9c7043f..f3f405e4 100644
--- a/kgforge/core/resource.py
+++ b/kgforge/core/resource.py
@@ -85,11 +85,6 @@ def _sync_resource(item, vlist, sync_value=True):
             else:
                 vlist.append(item)
 
-    def set_validated(self, validation_status: bool):
-        self._validated = validation_status
-
-    def set_last_action(self, action: "Action"):
-        self._last_action = action
 
     def _get_synchronized(self) -> bool:
         inner = []
diff --git a/kgforge/specializations/models/rdf_model.py b/kgforge/specializations/models/rdf_model.py
index 9ad14f63..0021389a 100644
--- a/kgforge/specializations/models/rdf_model.py
+++ b/kgforge/specializations/models/rdf_model.py
@@ -114,16 +114,16 @@ def _validate_many(self, resources: List[Resource], type_: str) -> None:
         for resource in resources:
             conforms, graph, _ = self.service.validate(resource, type_=type_)
             if conforms:
-                resource.set_validated(True)
+                resource._validated = True
                 action = Action(self._validate_many.__name__, conforms, None)
             else:
-                resource.set_validated(False)
+                resource._validated = False
                 violations = set(" ".join(re.findall('[A-Z][^A-Z]*', as_term(o)))
                                  for o in graph.objects(None, SH.sourceConstraintComponent))
                 message = f"violation(s) of type(s) {', '.join(sorted(violations))}"
                 action = Action(self._validate_many.__name__, conforms, ValidationError(message))
 
-            resource.set_last_action(action)
+            resource._last_action = action
 
     def _validate_one(self, resource: Resource, type_: str) -> None:
         conforms, _, report = self.service.validate(resource, type_)
diff --git a/kgforge/specializations/stores/nexus/service.py b/kgforge/specializations/stores/nexus/service.py
index 46248031..53719aea 100644
--- a/kgforge/specializations/stores/nexus/service.py
+++ b/kgforge/specializations/stores/nexus/service.py
@@ -491,7 +491,7 @@ def synchronize_resource(
         else:
             action = Action(action_name, succeeded, response)
 
-        resource.set_last_action(action)
+        resource._last_action = action
         resource._synchronized = synchronized
 
     def default_callback(self, fun_name: str) -> Callable: