diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index a53923b904..dd9b90d390 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -392,6 +392,7 @@ int32_t  taosGetErrSize();
 #define TSDB_CODE_MND_INVALID_SCHEMA_VER        TAOS_DEF_ERROR_CODE(0, 0x03C6)
 #define TSDB_CODE_MND_STABLE_UID_NOT_MATCH      TAOS_DEF_ERROR_CODE(0, 0x03C7)
 #define TSDB_CODE_MND_FIELD_CONFLICT_WITH_TSMA  TAOS_DEF_ERROR_CODE(0, 0x03C8)
+#define TSDB_CODE_MND_ONLY_TS_SCHEMA_NOT_ALLOW  TAOS_DEF_ERROR_CODE(0, 0x03C9)
 
 // mnode-trans
 #define TSDB_CODE_MND_TRANS_ALREADY_EXIST       TAOS_DEF_ERROR_CODE(0, 0x03D0)
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 2500d1ef40..2986bdc117 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -1928,7 +1928,7 @@ static int32_t mndDropSuperTableColumn(SMnode *pMnode, const SStbObj *pOld, SStb
   }
 
   if (pOld->numOfColumns == 2) {
-    code = TSDB_CODE_MND_INVALID_STB_ALTER_OPTION;
+    code = TSDB_CODE_MND_ONLY_TS_SCHEMA_NOT_ALLOW;
     TAOS_RETURN(code);
   }
 
@@ -4295,9 +4295,9 @@ static int32_t mndDropTbAdd(SMnode *pMnode, SHashObj *pVgHashMap, const SVgroupI
   return 0;
 }
 
-int vgInfoCmp(const void* lp, const void* rp) {
-  SVgroupInfo* pLeft = (SVgroupInfo*)lp;
-  SVgroupInfo* pRight = (SVgroupInfo*)rp;
+int vgInfoCmp(const void *lp, const void *rp) {
+  SVgroupInfo *pLeft = (SVgroupInfo *)lp;
+  SVgroupInfo *pRight = (SVgroupInfo *)rp;
   if (pLeft->hashBegin < pRight->hashBegin) {
     return -1;
   } else if (pLeft->hashBegin > pRight->hashBegin) {
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 52a3be120d..0a9eab43f8 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -307,6 +307,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_STABLE_UID_NOT_MATCH,     "Invalid stable uid")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_FIELD_CONFLICT_WITH_TSMA, "Field used by tsma")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_DNODE_IN_CREATING,        "Dnode in creating status")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_DNODE_IN_DROPPING,        "Dnode in dropping status")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_ONLY_TS_SCHEMA_NOT_ALLOW, "Schema with only ts field is not allowed")
 
 // mnode-trans
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_ALREADY_EXIST,      "Transaction already exists")