diff --git a/.gitignore b/.gitignore
index 2566257f..972957ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -194,4 +194,6 @@ mcp-task-queue/
 
 # 파이프라인 회고록 (자동 생성)
 docs/retrospectives/
-mes-architecture-guide.md
\ No newline at end of file
+mes-architecture-guide.md
+# MES Reference Documents
+docs/mes-reference/
diff --git a/frontend/components/v2/V2Repeater.tsx b/frontend/components/v2/V2Repeater.tsx
index f2f46f82..9290f21c 100644
--- a/frontend/components/v2/V2Repeater.tsx
+++ b/frontend/components/v2/V2Repeater.tsx
@@ -367,6 +367,20 @@ export const V2Repeater: React.FC<V2RepeaterProps> = ({
       });
 
       try {
+        // 🆕 필수값 검증
+        const requiredColumns = repeaterColumnsRef.current.filter(col => col.required);
+        for (let i = 0; i < currentData.length; i++) {
+          const row = currentData[i];
+          for (const col of requiredColumns) {
+            const val = row[col.field];
+            if (val === undefined || val === null || val === "") {
+              toast.error(`${i + 1}번째 행의 '${col.label}'은(는) 필수 입력 항목입니다.`);
+              window.dispatchEvent(new CustomEvent("repeaterSaveComplete"));
+              return;
+            }
+          }
+        }
+
         let validColumns: Set<string> = new Set();
         try {
           const columnsResponse = await apiClient.get(`/table-management/tables/${tableName}/columns`);
@@ -706,6 +720,7 @@ export const V2Repeater: React.FC<V2RepeaterProps> = ({
             displayName: col.displayName || col.display_name || col.label || name,
             detailSettings: col.detailSettings || col.detail_settings,
             categoryRef: typeInfo?.categoryRef || null,
+            isRequired: col.isRequired || col.is_required || col.notNull || col.not_null === true || col.not_null === 'Y' || col.not_null === 'y',
           };
         });
         setCurrentTableColumnInfo(columnMap);
@@ -808,10 +823,12 @@ export const V2Repeater: React.FC<V2RepeaterProps> = ({
     loadSourceColumnLabels();
   }, [resolvedSourceTable, isModalMode]);
 
+  const repeaterColumnsRef = useRef<RepeaterColumnConfig[]>([]);
+
   // V2ColumnConfig → RepeaterColumnConfig 변환
   // 🆕 모든 컬럼을 columns 배열의 순서대로 처리 (isSourceDisplay 플래그로 구분)
   const repeaterColumns: RepeaterColumnConfig[] = useMemo(() => {
-    return config.columns
+    const cols = config.columns
       .filter((col: V2ColumnConfig) => col.visible !== false)
       .map((col: V2ColumnConfig): RepeaterColumnConfig => {
         const colInfo = currentTableColumnInfo[col.key];
@@ -858,12 +875,15 @@ export const V2Repeater: React.FC<V2RepeaterProps> = ({
           type,
           editable: col.editable !== false,
           width: col.width === "auto" ? undefined : col.width,
-          required: false,
+          required: colInfo?.isRequired || false,
           categoryRef, // 🆕 카테고리 참조 ID 전달
           hidden: col.hidden, // 🆕 히든 처리
           autoFill: col.autoFill, // 🆕 자동 입력 설정
         };
       });
+      
+    repeaterColumnsRef.current = cols;
+    return cols;
   }, [config.columns, sourceColumnLabels, currentTableColumnInfo, resolvedSourceTable, config.dataSource?.tableName]);
 
   // 리피터 컬럼 설정에서 카테고리 타입 컬럼 자동 감지