diff --git a/include/libs/sync/sync.h b/include/libs/sync/sync.h
index 6e36e03b92031e2becf7dc04917e1a595df97760..a93b359ef3e4d5cd9f9c9ee00f90d7b6df8430c4 100644
--- a/include/libs/sync/sync.h
+++ b/include/libs/sync/sync.h
@@ -54,11 +54,6 @@ typedef enum {
   TAOS_SYNC_STATE_ERROR = 103,
 } ESyncState;
 
-typedef enum {
-  TAOS_SYNC_FSM_CB_SUCCESS = 0,
-  TAOS_SYNC_FSM_CB_OTHER_ERROR = 1,
-} ESyncFsmCbCode;
-
 typedef struct SNodeInfo {
   uint16_t nodePort;
   char     nodeFqdn[TSDB_FQDN_LEN];
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index f881e29610544c592a9c74c5bfcff94d932a995f..add8ee69740fb67a2b89f3581f32a4362f98ffe7 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -428,6 +428,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_SYN_PROPOSE_NOT_READY         TAOS_DEF_ERROR_CODE(0, 0x0911)
 #define TSDB_CODE_SYN_STANDBY_NOT_READY         TAOS_DEF_ERROR_CODE(0, 0x0912)
 #define TSDB_CODE_SYN_BATCH_ERROR               TAOS_DEF_ERROR_CODE(0, 0x0913)
+#define TSDB_CODE_SYN_TIMEOUT                   TAOS_DEF_ERROR_CODE(0, 0x0914)
 #define TSDB_CODE_SYN_INTERNAL_ERROR            TAOS_DEF_ERROR_CODE(0, 0x09FF)
 
 // tq
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 923ff1878cc1e7bd20f721c1966cfeefadd4921f..18d1beddbcf264bef27862a521a4fa6055e5de30 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -433,6 +433,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_SYN_RECONFIG_NOT_READY,       "Sync not ready for re
 TAOS_DEFINE_ERROR(TSDB_CODE_SYN_PROPOSE_NOT_READY,        "Sync not ready for propose")
 TAOS_DEFINE_ERROR(TSDB_CODE_SYN_STANDBY_NOT_READY,        "Sync not ready for standby")
 TAOS_DEFINE_ERROR(TSDB_CODE_SYN_BATCH_ERROR,              "Sync batch error")
+TAOS_DEFINE_ERROR(TSDB_CODE_SYN_TIMEOUT,                  "Sync timeout")
 TAOS_DEFINE_ERROR(TSDB_CODE_SYN_INTERNAL_ERROR,           "Sync internal error")
 
 // wal