diff --git a/webapp/i18n/en.json b/webapp/i18n/en.json
index 84c68a1..09b7642 100644
--- a/webapp/i18n/en.json
+++ b/webapp/i18n/en.json
@@ -77,6 +77,7 @@
   "badges.modal.error_generic": "An error occurred",
   "badges.modal.error_type_name_required": "Enter type name",
   "badges.modal.error_type_required": "Select achievement type",
+  "badges.modal.error_duplicate_name": "An achievement with this name already exists in this type",
   "badges.modal.create_type_title": "Create Type",
   "badges.modal.edit_type_title": "Edit Type",
   "badges.modal.btn_delete_type": "Delete type",
diff --git a/webapp/i18n/ru.json b/webapp/i18n/ru.json
index e88f171..073eb78 100644
--- a/webapp/i18n/ru.json
+++ b/webapp/i18n/ru.json
@@ -77,6 +77,7 @@
   "badges.modal.error_generic": "Произошла ошибка",
   "badges.modal.error_type_name_required": "Введите название типа",
   "badges.modal.error_type_required": "Выберите тип достижения",
+  "badges.modal.error_duplicate_name": "Достижение с таким названием уже существует в данном типе",
   "badges.modal.create_type_title": "Создать тип",
   "badges.modal.edit_type_title": "Редактировать тип",
   "badges.modal.btn_delete_type": "Удалить тип",
diff --git a/webapp/src/components/badge_modal/index.tsx b/webapp/src/components/badge_modal/index.tsx
index 64a872c..4485933 100644
--- a/webapp/src/components/badge_modal/index.tsx
+++ b/webapp/src/components/badge_modal/index.tsx
@@ -200,6 +200,18 @@ const BadgeModal: React.FC = () => {
                 setLoading(false);
                 return;
             }
+            const allBadges = await client.getAllBadges();
+            const trimmedName = form.name.trim().toLowerCase();
+            const duplicate = allBadges.find(
+                (b) => b.name.toLowerCase() === trimmedName &&
+                    String(b.type) === typeID &&
+                    (!isEditMode || !editData || b.id !== editData.id),
+            );
+            if (duplicate) {
+                setError(intl.formatMessage({id: 'badges.modal.error_duplicate_name', defaultMessage: 'Достижение с таким названием уже существует в данном типе'}));
+                setLoading(false);
+                return;
+            }
             if (isEditMode && editData) {
                 await client.updateBadge({
                     id: String(editData.id),