1 files changed, 6 insertions, 0 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index 7ee6dcc46e..0d3fc629af 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -74,3 +74,9 @@ class EventTypes(object):
     Message = "m.room.message"
     Topic = "m.room.topic"
     Name = "m.room.name"
+
+
+class RejectedReason(object):
+    AUTH_ERROR = "auth_error"
+    REPLACED = "replaced"
+    NOT_ANCESTOR = "not_ancestor"