diff --git a/include/json/neu_json_rw.h b/include/json/neu_json_rw.h
index 4ed47f79..0020b304 100644
--- a/include/json/neu_json_rw.h
+++ b/include/json/neu_json_rw.h
@@ -34,7 +34,6 @@ extern "C" {
 typedef struct {
     char *   config_name;
     char *   node_name;
-    uint32_t node_id;
     uint64_t timestamp;
 } neu_json_read_periodic_t;
 
diff --git a/plugins/mqtt/command/read_write.c b/plugins/mqtt/command/read_write.c
index bf65c8a4..ae1daa58 100644
--- a/plugins/mqtt/command/read_write.c
+++ b/plugins/mqtt/command/read_write.c
@@ -269,14 +269,13 @@ char *command_rw_read_periodic_response(neu_plugin_t *plugin, uint64_t sender,
     char *                   json_str = NULL;
     neu_json_read_periodic_t header   = {
         .config_name = (char *) neu_taggrp_cfg_get_name(config),
-        .node_id     = sender,
         .node_name   = (char *) node_name,
         .timestamp   = current_time()
     };
 
     log_debug("config:%s, node:%s, self_id:%ld, "
               "sender:%ld, time:%u",
-              header.config_name, header.node_name, header.node_id, sender,
+              header.config_name, header.node_name, sender, sender,
               header.timestamp);
 
     neu_json_read_resp_t json = { 0 };
diff --git a/src/parser/neu_json_rw.c b/src/parser/neu_json_rw.c
index 3f636537..a813f793 100644
--- a/src/parser/neu_json_rw.c
+++ b/src/parser/neu_json_rw.c
@@ -37,21 +37,22 @@ int neu_json_encode_read_resp(void *json_object, void *param)
     void *                    tag_array = neu_json_array();
     neu_json_read_resp_tag_t *p_tag     = resp->tags;
     for (int i = 0; i < resp->n_tag; i++) {
-        neu_json_elem_t tag_elems[] = { {
-                                            .name = "value",
-                                            .t    = p_tag->t,
-                                            .v    = p_tag->value,
-                                        },
-                                        {
-                                            .name      = "name",
-                                            .t         = NEU_JSON_STR,
-                                            .v.val_str = p_tag->name,
-                                        },
-                                        {
-                                            .name      = "error",
-                                            .t         = NEU_JSON_INT,
-                                            .v.val_int = p_tag->error,
-                                        } };
+        neu_json_elem_t tag_elems[2] = { 0 };
+
+        tag_elems[0].name      = "name";
+        tag_elems[0].t         = NEU_JSON_STR;
+        tag_elems[0].v.val_str = p_tag->name;
+
+        if (p_tag->error != 0) {
+            tag_elems[1].name      = "error";
+            tag_elems[1].t         = NEU_JSON_INT;
+            tag_elems[1].v.val_int = p_tag->error;
+        } else {
+            tag_elems[1].name = "value";
+            tag_elems[1].t    = p_tag->t;
+            tag_elems[1].v    = p_tag->value;
+        }
+
         tag_array = neu_json_encode_array(tag_array, tag_elems,
                                           NEU_JSON_ELEM_SIZE(tag_elems));
         p_tag++;
@@ -240,11 +241,6 @@ int neu_json_encode_read_periodic_resp(void *json_object, void *param)
     neu_json_read_periodic_t *resp = (neu_json_read_periodic_t *) param;
 
     neu_json_elem_t resp_elems[] = { {
-                                         .name      = "node_id",
-                                         .t         = NEU_JSON_INT,
-                                         .v.val_int = resp->node_id,
-                                     },
-                                     {
                                          .name      = "node_name",
                                          .t         = NEU_JSON_STR,
                                          .v.val_str = resp->node_name,
diff --git a/tests/json_rw_test.cc b/tests/json_rw_test.cc
index 6f15a6f8..4f051060 100644
--- a/tests/json_rw_test.cc
+++ b/tests/json_rw_test.cc
@@ -28,10 +28,8 @@ TEST(JsonAPITest, ReadReqDecode)
 
 TEST(JsonAPITest, ReadResEncode)
 {
-    char *buf = (char *) "{\"tags\": [{\"value\": 123, \"name\": \"data1\", "
-                         "\"error\": 0}, "
-                         "{\"value\": 11.123456789, \"name\": \"data2\", "
-                         "\"error\": 0}]}";
+    char *buf = (char *) "{\"tags\": [{\"name\": \"data1\", \"value\": 123}, "
+                         "{\"name\": \"data2\", \"value\": 11.123456789}]}";
     char *               result = NULL;
     neu_json_read_resp_t res    = {
         .n_tag = 2,