--- a/src/pyams_workflow/interfaces/__init__.py	Wed May 20 12:47:14 2015 +0200
+++ b/src/pyams_workflow/interfaces/__init__.py	Wed May 20 14:57:49 2015 +0200
@@ -324,6 +324,13 @@
     """Workflow content version marker interface"""
 
 
+class IWorkflowTransitionInfo(Interface):
+    """Workflow transition info"""
+
+    transition_id = TextLine(title=_("Transition ID"),
+                             required=True)
+
+
 class IWorkflowPublicationInfo(Interface):
     """Workflow content publication info"""