From 04422141292aefa489cd6cb5f05a1d2f2de7f20f Mon Sep 17 00:00:00 2001
From: Nathaniel Manista <nathaniel@google.com>
Date: Tue, 14 Jun 2016 20:10:52 +0000
Subject: [PATCH] UNIMPLEMENTED status for cardinality violation

---
 src/python/grpcio/grpc/_server.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/python/grpcio/grpc/_server.py b/src/python/grpcio/grpc/_server.py
index 2f99e5b4125..1d62292e90c 100644
--- a/src/python/grpcio/grpc/_server.py
+++ b/src/python/grpcio/grpc/_server.py
@@ -342,10 +342,9 @@ def _unary_request(rpc_event, state, request_deserializer):
             if state.client is _CLOSED:
               details = '"{}" requires exactly one request message.'.format(
                   rpc_event.request_call_details.method)
-              # TODO(5992#issuecomment-220761992): really, what status code?
               _abort(
                   state, rpc_event.operation_call,
-                  cygrpc.StatusCode.unavailable, details)
+                  cygrpc.StatusCode.unimplemented, details)
               return None
             elif state.client is _CANCELLED:
               return None