diff --git a/lib/redux/actions/kassa_actions.dart b/lib/redux/actions/kassa_actions.dart
index 56795cb..3c7be85 100644
--- a/lib/redux/actions/kassa_actions.dart
+++ b/lib/redux/actions/kassa_actions.dart
@@ -5,6 +5,7 @@ import 'package:aman_kassa_flutter/core/locator.dart';
 import 'package:aman_kassa_flutter/core/models/dict_dao.dart';
 import 'package:aman_kassa_flutter/core/models/product_dao.dart';
 import 'package:aman_kassa_flutter/core/services/DataService.dart';
+import 'package:aman_kassa_flutter/core/services/dialog_service.dart';
 import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
 import 'package:aman_kassa_flutter/redux/state/kassa_state.dart';
 import 'package:meta/meta.dart';
@@ -20,6 +21,7 @@ class SetKassaStateAction {
 }
 
 final DataService _dataService = locator<DataService>();
+final DialogService _dialogService = locator<DialogService>();
 
 Future<void> backBottomElement(Store<AppState> store) async {
   List<DictDao> prevCategories = store.state.kassaState.prevCategories;
@@ -47,6 +49,13 @@ ThunkAction<AppState> addProductToKassaItems(Good good, String excise) {
   return (Store<AppState> store) async {
     List<ProductDao> items = store.state.kassaState.kassaItems;
     int index = items.indexWhere((element) => element.excise == null && element.good?.id == good.id);
+    if(excise !=null) {
+      int existIndex = items.indexWhere((element) => element.excise != null && element.excise == excise);
+      if(existIndex > -1) {
+        _dialogService.showDialog(description: 'Нельзя добавить повторно одинаковые товары');
+        return;
+      }
+    }
     if (index > -1 && excise == null) {
       store.dispatch(counterProductFromKassaItems(index, 1));
     } else {