symfony
diff --git a/‎messenger.rst
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+4-2Lines changed: 4 additions & 2 deletions b/‎messenger.rst
Copy file name to clipboardExpand all lines: messenger.rst
+4-2Lines changed: 4 additions & 2 deletions
@@ -2295,8 +2295,10 @@ when building absolute URLs.
 
 
 Add the ``validation`` middleware if you need to validate the message object before handling it.
-Internally it uses the Symfony's validator. If validation fails, a ``ValidationFailedException``
-will be thrown that you can catch and read errors from.
+Internally it uses the Symfony's validator. The :class:`Symfony\\Component\\Messenger\\Stamp\\ValidationStamp` should
+be used to configure the validation groups. If validation fails,
+a ``ValidationFailedException`` will be thrown that you can catch
+and read errors from.
 
 
 Messenger Events