Merge pull request #4463 from taosdata/patch/TD-2304

[TD-2304]<enhance>: make *Invalid timestamp* error more clear

src/inc/taoserror.h

@@ -64,7 +64,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_TRAN_ID,          0, 0x000F, "Invalid tr
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_SESSION_ID,       0, 0x0010, "Invalid session id")
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_MSG_TYPE,         0, 0x0011, "Invalid message type")
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_RESPONSE_TYPE,    0, 0x0012, "Invalid response type")
-TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_TIME_STAMP,       0, 0x0013, "Invalid timestamp")
+TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_TIME_STAMP,       0, 0x0013, "Client and server's time is not synchronized")
 TAOS_DEFINE_ERROR(TSDB_CODE_APP_NOT_READY,                0, 0x0014, "Database not ready")
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_FQDN_ERROR,               0, 0x0015, "Unable to resolve FQDN")