diff --git a/apps/iot/src/iot_endpoint.erl b/apps/iot/src/iot_endpoint.erl
index 66e54d2..9af122d 100644
--- a/apps/iot/src/iot_endpoint.erl
+++ b/apps/iot/src/iot_endpoint.erl
@@ -142,19 +142,28 @@ handle_event(cast, {reload, NEndpoint = #endpoint{name = Name}}, connected, Stat
 
 handle_event(cast, {forward, LocationCode, Fields, Timestamp}, StateName, State = #state{tab_name = TabName, window_size = WindowSize, flight_num = FlightNum, endpoint = #endpoint{name = Name, mapper_fun = MapperFun}}) ->
     try
-        Body = if
+        Result = if
                    is_function(MapperFun, 2) ->
                        MapperFun(LocationCode, Fields);
                    is_function(MapperFun, 3) ->
                        MapperFun(LocationCode, Fields, Timestamp)
                end,
-        mnesia_queue:insert(TabName, #north_data{location_code = LocationCode, body = Body}),
-        %% 避免不必要的内部消息
-        Actions = case StateName =:= connected andalso FlightNum < WindowSize of
-                      true  -> [{next_event, info, fetch_next}];
-                      false -> []
-                  end,
-        {keep_state, State, Actions}
+        case Result of
+            {ok, Body} ->
+                mnesia_queue:insert(TabName, #north_data{location_code = LocationCode, body = Body}),
+                %% 避免不必要的内部消息
+                Actions = case StateName =:= connected andalso FlightNum < WindowSize of
+                              true  -> [{next_event, info, fetch_next}];
+                              false -> []
+                          end,
+                {keep_state, State, Actions};
+            {error, Error} ->
+                lager:debug("[iot_endpoint] forward endpoint: ~p, mapper get error: ~p", [Name, Error]),
+                {keep_state, State};
+            ignore ->
+                lager:debug("[iot_endpoint] forward endpoint: ~p, mapper ignore", [Name]),
+                {keep_state, State}
+        end
     catch _:Reason ->
         lager:debug("[iot_endpoint] forward endpoint: ~p, mapper data get error: ~p", [Name, Reason]),
         {keep_state, State}
@@ -259,7 +268,8 @@ handle_event(EventType, Event, StateName, State) ->
 %% terminate. It should be the opposite of Module:init/1 and do any
 %% necessary cleaning up. When it returns, the gen_statem terminates with
 %% Reason. The return value is ignored.
-terminate(_Reason, _StateName, _State) ->
+terminate(Reason, _StateName, _State) ->
+    lager:debug("[iot_endpoint] terminate with reason: ~p", [Reason]),
     ok.
 
 %% @private
diff --git a/apps/iot/src/postman/mqtt_postman.erl b/apps/iot/src/postman/mqtt_postman.erl
index 4826341..b9a868c 100644
--- a/apps/iot/src/postman/mqtt_postman.erl
+++ b/apps/iot/src/postman/mqtt_postman.erl
@@ -100,7 +100,7 @@ handle_info({puback, Packet = #{packet_id := PacketId}}, State = #state{parent_p
     end;
 
 %% 转发信息
-handle_info({post, ReceiverPid, #north_data{id = Id, location_code = LocationCode, body = Message}}, State = #state{parent_pid = ParentPid, conn_pid = ConnPid, inflight = InFlight, topic = Topic0, qos = Qos}) ->
+handle_info({post, ReceiverPid, #north_data{id = Id, location_code = LocationCode, body = Message}}, State = #state{conn_pid = ConnPid, inflight = InFlight, topic = Topic0, qos = Qos}) ->
     Topic = re:replace(Topic0, <<"\\${location_code}">>, LocationCode, [global, {return, binary}]),
     lager:debug("[mqtt_postman] will publish topic: ~p, message: ~p, qos: ~p", [Topic, Message, Qos]),
     case emqtt:publish(ConnPid, Topic, #{}, Message, [{qos, Qos}, {retain, true}]) of