diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index faf4addb4b5cc242c6cd1014fb64d7f004aabe43..fd0ed1cf1562a71ba86dc2ea807fabb09507e3dd 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -2360,6 +2360,17 @@ static int32_t tDecodeTSmaWrapper(SDecoder* pDecoder, STSmaWrapper* pReq) {
   return 0;
 }
 
+typedef struct {
+  int64_t tsmaIndexUid;
+  STimeWindow queryWindow;
+} SVGetTsmaExpWndsReq;
+
+typedef struct {
+  int64_t tsmaIndexUid;
+  int32_t numExpWnds;
+  TSKEY*  expWndsStartTs;
+} SVGetTsmaExpWndsRsp;
+
 typedef struct {
   int idx;
 } SMCreateFullTextReq;
diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index 51a15c1489cf94d755dfdda386edae8c2ae4a708..90239bac3e4f64e1fe7bb86b357e14d3384043b5 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -206,6 +206,7 @@ enum {
   TD_DEF_MSG_TYPE(TDMT_VND_CANCEL_SMA, "vnode-cancel-sma", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_DROP_SMA, "vnode-drop-sma", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_SUBMIT_RSMA, "vnode-submit-rsma", SSubmitReq, SSubmitRsp)
+  TD_DEF_MSG_TYPE(TDMT_VND_GET_TSMA_EXP_WNDS, "vnode-get-tsma-expired-windows", SVGetTsmaExpWndsReq, SVGetTsmaExpWndsRsp)
 
   TD_DEF_MSG_TYPE(TDMT_VND_SYNC_TIMEOUT, "vnode-sync-timeout", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_SYNC_PING, "vnode-sync-ping", NULL, NULL)