2 files changed, 8 insertions, 0 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index 4df930c8d1..a27bf3b32d 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2017 Vector Creations Ltd
+# Copyright 2018 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -94,3 +95,8 @@ class RoomCreationPreset(object):
 class ThirdPartyEntityKind(object):
     USER = "user"
     LOCATION = "location"
+
+
+# vdh-test-version is a placeholder to get room versioning support working and tested
+# until we have a working v2.
+KNOWN_ROOM_VERSIONS = {"1", "vdh-test-version"}
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index b41d595059..477ca07a24 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -56,6 +57,7 @@ class Codes(object):
     CONSENT_NOT_GIVEN = "M_CONSENT_NOT_GIVEN"
     CANNOT_LEAVE_SERVER_NOTICE_ROOM = "M_CANNOT_LEAVE_SERVER_NOTICE_ROOM"
     MAU_LIMIT_EXCEEDED = "M_MAU_LIMIT_EXCEEDED"
+    UNSUPPORTED_ROOM_VERSION = "M_UNSUPPORTED_ROOM_VERSION"
 
 
 class CodeMessageException(RuntimeError):