diff --git a/source/client/src/clientMsgHandler.c b/source/client/src/clientMsgHandler.c
index e50399bf65..a154ff1d90 100644
--- a/source/client/src/clientMsgHandler.c
+++ b/source/client/src/clientMsgHandler.c
@@ -376,10 +376,7 @@ int32_t processCreateSTableRsp(void* param, SDataBuf* pMsg, int32_t code) {
     SMCreateStbRsp createRsp = {0};
     SDecoder       coder = {0};
     tDecoderInit(&coder, pMsg->pData, pMsg->len);
-    code = tDecodeSMCreateStbRsp(&coder, &createRsp);
-    if (code != 0){
-      setErrno(pRequest, TAOS_GET_TERRNO(code));
-    }
+    (void)tDecodeSMCreateStbRsp(&coder, &createRsp);  // pMsg->len == 0
     tDecoderClear(&coder);
 
     pRequest->body.resInfo.execRes.msgType = TDMT_MND_CREATE_STB;
@@ -472,10 +469,7 @@ int32_t processAlterStbRsp(void* param, SDataBuf* pMsg, int32_t code) {
     SMAlterStbRsp alterRsp = {0};
     SDecoder      coder = {0};
     tDecoderInit(&coder, pMsg->pData, pMsg->len);
-    code = tDecodeSMAlterStbRsp(&coder, &alterRsp);
-    if (code != 0){
-      setErrno(pRequest, TAOS_GET_TERRNO(code));
-    }
+    (void)tDecodeSMAlterStbRsp(&coder, &alterRsp);  // pMsg->len = 0
     tDecoderClear(&coder);
 
     pRequest->body.resInfo.execRes.msgType = TDMT_MND_ALTER_STB;
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 6417e6564e..d2a6f1eab7 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -1146,13 +1146,13 @@ static void mndTransSendRpcRsp(SMnode *pMnode, STrans *pTrans) {
       } else if (pTrans->originRpcType == TDMT_MND_CREATE_STB) {
         void   *pCont = NULL;
         int32_t contLen = 0;
-        if (0 == mndBuildSMCreateStbRsp(pMnode, pTrans->dbname, pTrans->stbname, &pCont, &contLen) != 0) {
+        if (0 == mndBuildSMCreateStbRsp(pMnode, pTrans->dbname, pTrans->stbname, &pCont, &contLen)) {
           mndTransSetRpcRsp(pTrans, pCont, contLen);
         }
       } else if (pTrans->originRpcType == TDMT_MND_CREATE_INDEX) {
         void   *pCont = NULL;
         int32_t contLen = 0;
-        if (0 == mndBuildSMCreateStbRsp(pMnode, pTrans->dbname, pTrans->stbname, &pCont, &contLen) != 0) {
+        if (0 == mndBuildSMCreateStbRsp(pMnode, pTrans->dbname, pTrans->stbname, &pCont, &contLen)) {
           mndTransSetRpcRsp(pTrans, pCont, contLen);
         }
       }
diff --git a/tests/system-test/2-query/ttl_comment.py b/tests/system-test/2-query/ttl_comment.py
index ba24579611..8d31ed8b5e 100644
--- a/tests/system-test/2-query/ttl_comment.py
+++ b/tests/system-test/2-query/ttl_comment.py
@@ -18,6 +18,9 @@ from util.cases import tdCases
 from util.sql import tdSql
 
 class TDTestCase:
+    clientCfgDict = {'debugFlag': 135}
+    updatecfgDict = {'debugFlag': 135, 'asynclog': 0}
+    updatecfgDict["clientCfg"] = clientCfgDict
     def caseDescription(self):
         '''
         ttl/comment test