diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index b518a212a47e3a873a6990537e64ff38fdf07d66..cc3190a1d03f2423790a8de18720280b7f001329 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -454,12 +454,13 @@ int tscSendMsgToServer(SSqlObj *pSql) {
   };
   
   if(rpcSendRequest(pObj->pRpcObj->pDnodeConn, &pSql->epSet, &rpcMsg, &pSql->rpcRid)) {
-    if(pSql->cmd.command < TSDB_SQL_HB)
+    if(pSql->cmd.command == TSDB_SQL_SELECT )
       rpcSaveSendInfo(pSql->rpcRid, &pSql->pPrevContext);
     return TSDB_CODE_SUCCESS;
   }
 
-  return TSDB_CODE_SUCCESS;
+  tscError("0x%"PRIx64" rpc send data failed. msg=%s", pSql->self, taosMsg[pSql->cmd.msgType]);
+  return TSDB_CODE_TSC_SEND_DATA_FAILED;
 }
 
 // handle three situation
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index 2295b88b7b98f55d077ca33e20a1ca3e001233a2..029c63ddcfb54ae2f49dbca28e4c92d8446a033e 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -117,6 +117,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_TSC_RES_TOO_MANY              TAOS_DEF_ERROR_CODE(0, 0x0227)  //"Result set too large to be output")
 #define TSDB_CODE_TSC_INVALID_SCHEMA_VERSION    TAOS_DEF_ERROR_CODE(0, 0x0228)  //"invalid table schema version")
 #define TSDB_CODE_TSC_TOO_MANY_SML_LINES        TAOS_DEF_ERROR_CODE(0, 0x0229)  //"too many lines in batch")
+#define TSDB_CODE_TSC_SEND_DATA_FAILED          TAOS_DEF_ERROR_CODE(0, 0x0230)  //"Client send request data error"
 
 // mnode
 #define TSDB_CODE_MND_MSG_NOT_PROCESSED         TAOS_DEF_ERROR_CODE(0, 0x0300)  //"Message not processed"
diff --git a/src/util/src/terror.c b/src/util/src/terror.c
index 50e10904b1212328419d74fc65958d3881f30920..6820ff5aefdde4228dc9c431c27a919bf0adc27f 100644
--- a/src/util/src/terror.c
+++ b/src/util/src/terror.c
@@ -124,6 +124,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE,    "Invalid line protocol
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PRECISION_TYPE,   "Invalid timestamp precision type")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_RES_TOO_MANY,             "Result set too large to be output")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_TOO_MANY_SML_LINES,       "Too many lines in batch")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_SEND_DATA_FAILED,         "Client send request data failed")
 
 // mnode
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_MSG_NOT_PROCESSED,        "Message not processed")