diff --git a/scripts/sql/malaysia_stock_db_init.sql b/scripts/sql/malaysia_stock_db_init.sql
index a5c58d8..7647896 100644
--- a/scripts/sql/malaysia_stock_db_init.sql
+++ b/scripts/sql/malaysia_stock_db_init.sql
@@ -262,7 +262,8 @@ CREATE TABLE IF NOT EXISTS daily_stocktake_rack (
                       sku_code LIKE 'MT-%'
                       OR sku_code LIKE 'MX-%'
                       OR sku_code LIKE 'MZ-%'
-                      OR sku_code LIKE 'MY-%'),
+                      OR sku_code LIKE 'MY-%'
+                      OR sku_code LIKE 'MD-%'),  -- 뚜껑: 위치확인용(재고 집계 제외)
     units_per_box INTEGER     NOT NULL CHECK (units_per_box > 0),
     box_count     INTEGER     NOT NULL CHECK (box_count > 0),
     created_at    TIMESTAMPTZ NOT NULL DEFAULT now()
diff --git a/scripts/sql/malaysia_stock_db_rack_allow_lid.sql b/scripts/sql/malaysia_stock_db_rack_allow_lid.sql
new file mode 100644
index 0000000..7819289
--- /dev/null
+++ b/scripts/sql/malaysia_stock_db_rack_allow_lid.sql
@@ -0,0 +1,19 @@
+-- ════════════════════════════════════════════════════════════
+-- 마이그레이션: 랙 입력에 뚜껑(MD-) 허용
+--   daily_stocktake_rack.sku_code CHECK 제약에 'MD-%' 를 추가한다.
+--   뚜껑은 위치 확인용으로만 랙에 두며, 재고 집계(daily_stocktake_line)
+--   에는 반영되지 않는다(애플리케이션 aggregate_rack 에서 제외).
+--   기존 운영 malaysia_stock_db 에 적용(신규 설치는 init 에 이미 포함).
+--   superuser/owner 로 실행. 멱등.
+-- ════════════════════════════════════════════════════════════
+ALTER TABLE daily_stocktake_rack
+    DROP CONSTRAINT IF EXISTS daily_stocktake_rack_sku_code_check;
+
+ALTER TABLE daily_stocktake_rack
+    ADD CONSTRAINT daily_stocktake_rack_sku_code_check CHECK (
+        sku_code LIKE 'MT-%'
+        OR sku_code LIKE 'MX-%'
+        OR sku_code LIKE 'MZ-%'
+        OR sku_code LIKE 'MY-%'
+        OR sku_code LIKE 'MD-%'
+    );