diff --git a/src/components/templates/IntegratedDetailTemplate/index.tsx b/src/components/templates/IntegratedDetailTemplate/index.tsx
index 044e6e0a..51991b80 100644
--- a/src/components/templates/IntegratedDetailTemplate/index.tsx
+++ b/src/components/templates/IntegratedDetailTemplate/index.tsx
@@ -210,11 +210,11 @@ export function IntegratedDetailTemplate<T extends Record<string, unknown>>({
         : formData;
 
       const result = await onSubmit(dataToSubmit);
-      if (result.success) {
+      if (result?.success) {
         toast.success(isCreateMode ? '등록되었습니다.' : '저장되었습니다.');
         navigateToList();
       } else {
-        toast.error(result.error || '저장에 실패했습니다.');
+        toast.error(result?.error || '저장에 실패했습니다.');
       }
     } catch (error) {
       console.error('Submit error:', error);
@@ -238,11 +238,11 @@ export function IntegratedDetailTemplate<T extends Record<string, unknown>>({
     setIsSubmitting(true);
     try {
       const result = await onDelete(itemId);
-      if (result.success) {
+      if (result?.success) {
         toast.success('삭제되었습니다.');
         navigateToList();
       } else {
-        toast.error(result.error || '삭제에 실패했습니다.');
+        toast.error(result?.error || '삭제에 실패했습니다.');
       }
     } catch (error) {
       console.error('Delete error:', error);