diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 268173e7955c5580c584c68d3d37ba94f1932d0c..27f4eeedb2aa5e98c59755c07f388198681e7e22 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -466,6 +466,14 @@ bool syncIsReadyForRead(int64_t rid) {
     }
   }
 
+  if (!ready) {
+    if (pSyncNode->state != TAOS_SYNC_STATE_LEADER) {
+      terrno = TSDB_CODE_SYN_NOT_LEADER;
+    } else {
+      terrno = TSDB_CODE_APP_NOT_READY;
+    }
+  }
+
   syncNodeRelease(pSyncNode);
   return ready;
 }