diff --git a/src/Module/Core/Domain/Entity/Role.php b/src/Module/Core/Domain/Entity/Role.php
index 14d20cd..ae98b38 100644
--- a/src/Module/Core/Domain/Entity/Role.php
+++ b/src/Module/Core/Domain/Entity/Role.php
@@ -168,6 +168,10 @@ class Role
      * permettre au RoleProcessor de detecter une tentative de modification
      * du code (garde "code immuable"). Le code reste en pratique fige apres
      * creation : le processor refuse toute modification via 400.
+     *
+     * @internal Ne PAS appeler depuis le domaine, les fixtures ou les commandes.
+     *           Hors contexte API Platform, cette methode modifie silencieusement
+     *           le code sans aucun garde.
      */
     public function setCode(string $code): static
     {
diff --git a/tests/Module/Core/Infrastructure/ApiPlatform/State/Processor/RoleProcessorTest.php b/tests/Module/Core/Infrastructure/ApiPlatform/State/Processor/RoleProcessorTest.php
index dc890b9..c90fe5a 100644
--- a/tests/Module/Core/Infrastructure/ApiPlatform/State/Processor/RoleProcessorTest.php
+++ b/tests/Module/Core/Infrastructure/ApiPlatform/State/Processor/RoleProcessorTest.php
@@ -77,6 +77,7 @@ final class RoleProcessorTest extends TestCase
         $this->persistProcessor->expects(self::never())->method('process');
 
         $this->expectException(AccessDeniedHttpException::class);
+        $this->expectExceptionMessage('Le role systeme "admin" ne peut pas etre supprime.');
 
         $this->processor->process($role, new Delete());
     }