1 files changed, 1 insertions, 0 deletions
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index 5dd6e84289..edd2073384 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -70,6 +70,7 @@ class Codes(str, Enum):
     THREEPID_NOT_FOUND = "M_THREEPID_NOT_FOUND"
     THREEPID_DENIED = "M_THREEPID_DENIED"
     INVALID_USERNAME = "M_INVALID_USERNAME"
+    THREEPID_MEDIUM_NOT_SUPPORTED = "M_THREEPID_MEDIUM_NOT_SUPPORTED"
     SERVER_NOT_TRUSTED = "M_SERVER_NOT_TRUSTED"
     CONSENT_NOT_GIVEN = "M_CONSENT_NOT_GIVEN"
     CANNOT_LEAVE_SERVER_NOTICE_ROOM = "M_CANNOT_LEAVE_SERVER_NOTICE_ROOM"