diff --git a/src/components/process-management/RuleModal.tsx b/src/components/process-management/RuleModal.tsx
index d8fd37f0..8ce0f161 100644
--- a/src/components/process-management/RuleModal.tsx
+++ b/src/components/process-management/RuleModal.tsx
@@ -74,7 +74,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
   // 개별 품목용 상태
   const [searchKeyword, setSearchKeyword] = useState('');
   const [selectedItemType, setSelectedItemType] = useState('all');
-  const [selectedItemCodes, setSelectedItemCodes] = useState<Set<string>>(new Set());
+  const [selectedItemIds, setSelectedItemIds] = useState<Set<string>>(new Set());
 
   // 품목 목록 API 상태
   const [itemList, setItemList] = useState<ItemOption[]>([]);
@@ -86,16 +86,35 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
     const items = await getItemList({
       q: q || undefined,
       itemType: itemType === 'all' ? undefined : itemType,
-      size: 100,
+      size: 1000, // 전체 품목 조회
     });
     setItemList(items);
     setIsItemsLoading(false);
   }, []);
 
+  // 검색어 유효성 검사 함수
+  const isValidSearchKeyword = (keyword: string): boolean => {
+    if (!keyword || keyword.trim() === '') return false;
+
+    const trimmed = keyword.trim();
+    // 한글이 포함되어 있으면 1자 이상
+    const hasKorean = /[가-힣]/.test(trimmed);
+    if (hasKorean) return trimmed.length >= 1;
+
+    // 영어/숫자만 있으면 2자 이상
+    return trimmed.length >= 2;
+  };
+
   // 검색어/품목유형 변경 시 API 호출 (debounce)
   useEffect(() => {
     if (registrationType !== 'individual') return;
 
+    // 검색어 유효성 검사 - 유효하지 않으면 빈 목록
+    if (!isValidSearchKeyword(searchKeyword)) {
+      setItemList([]);
+      return;
+    }
+
     const timer = setTimeout(() => {
       loadItems(searchKeyword, selectedItemType);
     }, 300);
@@ -103,21 +122,30 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
     return () => clearTimeout(timer);
   }, [searchKeyword, selectedItemType, registrationType, loadItems]);
 
-  // 모달 열릴 때 품목 목록 초기 로드
+  // 품목유형 변경 시 검색어가 유효하면 재검색
+  useEffect(() => {
+    if (registrationType !== 'individual') return;
+    if (!isValidSearchKeyword(searchKeyword)) return;
+
+    loadItems(searchKeyword, selectedItemType);
+  }, [selectedItemType]);
+
+  // 모달 열릴 때 품목 목록 초기화 (초기 로드 안함)
   useEffect(() => {
     if (open && registrationType === 'individual') {
-      loadItems('', 'all');
+      setItemList([]);
+      setSearchKeyword('');
     }
-  }, [open, registrationType, loadItems]);
+  }, [open, registrationType]);
 
   // 체크박스 토글
-  const handleToggleItem = (code: string) => {
-    setSelectedItemCodes((prev) => {
+  const handleToggleItem = (id: string) => {
+    setSelectedItemIds((prev) => {
       const newSet = new Set(prev);
-      if (newSet.has(code)) {
-        newSet.delete(code);
+      if (newSet.has(id)) {
+        newSet.delete(id);
       } else {
-        newSet.add(code);
+        newSet.add(id);
       }
       return newSet;
     });
@@ -125,13 +153,13 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
 
   // 전체 선택
   const handleSelectAll = () => {
-    const allCodes = itemList.map((item) => item.code);
-    setSelectedItemCodes(new Set(allCodes));
+    const allIds = itemList.map((item) => item.id);
+    setSelectedItemIds(new Set(allIds));
   };
 
   // 초기화
   const handleResetSelection = () => {
-    setSelectedItemCodes(new Set());
+    setSelectedItemIds(new Set());
   };
 
   // 모달 열릴 때 초기화 또는 수정 데이터 로드
@@ -149,12 +177,12 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
         setSearchKeyword('');
         setSelectedItemType('all');
 
-        // 개별 품목인 경우 선택된 품목 코드 설정
+        // 개별 품목인 경우 선택된 품목 ID 설정
         if (editRule.registrationType === 'individual') {
-          const codes = editRule.conditionValue.split(',').filter(Boolean);
-          setSelectedItemCodes(new Set(codes));
+          const ids = editRule.conditionValue.split(',').filter(Boolean);
+          setSelectedItemIds(new Set(ids));
         } else {
-          setSelectedItemCodes(new Set());
+          setSelectedItemIds(new Set());
         }
       } else {
         // 추가 모드: 초기화
@@ -167,7 +195,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
         setIsActive(true);
         setSearchKeyword('');
         setSelectedItemType('all');
-        setSelectedItemCodes(new Set());
+        setSelectedItemIds(new Set());
       }
     }
   }, [open, editRule]);
@@ -179,7 +207,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
         return;
       }
     } else {
-      if (selectedItemCodes.size === 0) {
+      if (selectedItemIds.size === 0) {
         alert('품목을 최소 1개 이상 선택해주세요.');
         return;
       }
@@ -188,7 +216,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
     // 개별 품목의 경우 conditionValue에 품목코드들을 저장
     const finalConditionValue =
       registrationType === 'individual'
-        ? Array.from(selectedItemCodes).join(',')
+        ? Array.from(selectedItemIds).join(',')
         : conditionValue.trim();
 
     onAdd({
@@ -211,7 +239,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
     setIsActive(true);
     setSearchKeyword('');
     setSelectedItemType('all');
-    setSelectedItemCodes(new Set());
+    setSelectedItemIds(new Set());
 
     onOpenChange(false);
   };
@@ -389,7 +417,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
                     {isItemsLoading ? (
                       '로딩 중...'
                     ) : (
-                      <>품목 목록 ({itemList.length}개) | 선택됨 ({selectedItemCodes.size}개)</>
+                      <>품목 목록 ({itemList.length}개) | 선택됨 ({selectedItemIds.size}개)</>
                     )}
                   </span>
                 </div>
@@ -411,7 +439,7 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
                     size="sm"
                     onClick={handleResetSelection}
                     className="text-xs h-7"
-                    disabled={selectedItemCodes.size === 0}
+                    disabled={selectedItemIds.size === 0}
                   >
                     초기화
                   </Button>
@@ -439,7 +467,9 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
                     ) : itemList.length === 0 ? (
                       <TableRow key="empty">
                         <TableCell colSpan={4} className="text-center text-muted-foreground py-8">
-                          검색 결과가 없습니다
+                          {searchKeyword.trim() === ''
+                            ? '품목을 검색해주세요 (한글 1자 이상, 영문 2자 이상)'
+                            : '검색 결과가 없습니다'}
                         </TableCell>
                       </TableRow>
                     ) : (
@@ -447,12 +477,12 @@ export function RuleModal({ open, onOpenChange, onAdd, editRule }: RuleModalProp
                         <TableRow
                           key={item.id}
                           className="cursor-pointer hover:bg-muted/50"
-                          onClick={() => handleToggleItem(item.code)}
+                          onClick={() => handleToggleItem(item.id)}
                         >
                           <TableCell>
                             <Checkbox
-                              checked={selectedItemCodes.has(item.code)}
-                              onCheckedChange={() => handleToggleItem(item.code)}
+                              checked={selectedItemIds.has(item.id)}
+                              onCheckedChange={() => handleToggleItem(item.id)}
                               onClick={(e) => e.stopPropagation()}
                             />
                           </TableCell>