diff --git a/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx b/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx
index 9dc5cb8fc..21eed8efc 100644
--- a/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx
+++ b/apps/as/src/pages/instl-sncn/ui/cnfm-regist-page.tsx
@@ -339,7 +339,7 @@ function CnfmRegistPage({ initialData }: { initialData?: any } = {}) {
           };
         }
         setAmtMap(map);
-      }
+      } 
     } catch (err) {
       console.error("initialData 매핑 실패", err);
     }
@@ -550,13 +550,12 @@ function CnfmRegistPage({ initialData }: { initialData?: any } = {}) {
 
   // 수정 모드에서 서버의 체크리스트 결과값을 폼 상태로 반영
   useEffect(() => {
-    if (!initialData || cklstRows.length === 0) return;
-    const det = (initialData.detDto ?? initialData) as any;
-    if (!Array.isArray(det.cklstResultList)) return;
+    if (!initialData || cklstRows.length === 0) return; 
+    const results = initialData.cklstResultList ?? [];
+    if (!Array.isArray(results) || results.length === 0) return;
 
     const lookup = new Map<string, string>();
-    for (const r of det.cklstResultList) {
-      // 서버의 결과에 cklstSn, cklstArtclSn, cklstRvwSn 조합이 있다면 key 생성
+    for (const r of results) {
       const key = `${r.cklstSn}_${r.cklstArtclSn ?? ""}_${r.cklstRvwSn}`;
       if (r.rvwRsltAnmlyYn === "Y" || r.rvwRsltAnmlyYn === "N") lookup.set(key, r.rvwRsltAnmlyYn);
     }