diff --git a/system1-factory/api/models/vacationBalanceModel.js b/system1-factory/api/models/vacationBalanceModel.js
index 78c0f4f..7748e4f 100644
--- a/system1-factory/api/models/vacationBalanceModel.js
+++ b/system1-factory/api/models/vacationBalanceModel.js
@@ -105,7 +105,7 @@ const vacationBalanceModel = {
   async deductDays(userId, vacationTypeId, year, daysToDeduct) {
     const db = await getDb();
     const [result] = await db.query(`
-      UPDATE vacation_balance_details
+      UPDATE sp_vacation_balances
       SET used_days = used_days + ?,
           updated_at = NOW()
       WHERE user_id = ?
@@ -121,7 +121,7 @@ const vacationBalanceModel = {
   async restoreDays(userId, vacationTypeId, year, daysToRestore) {
     const db = await getDb();
     const [result] = await db.query(`
-      UPDATE vacation_balance_details
+      UPDATE sp_vacation_balances
       SET used_days = GREATEST(0, used_days - ?),
           updated_at = NOW()
       WHERE user_id = ?
@@ -138,20 +138,21 @@ const vacationBalanceModel = {
     const db = await getDb();
     const [rows] = await db.query(`
       SELECT
-        vbd.id,
-        vbd.vacation_type_id,
+        svb.id,
+        svb.vacation_type_id,
         vt.type_name,
         vt.type_code,
         vt.priority,
-        vbd.total_days,
-        vbd.used_days,
-        vbd.remaining_days
-      FROM vacation_balance_details vbd
-      INNER JOIN vacation_types vt ON vbd.vacation_type_id = vt.id
-      WHERE vbd.user_id = ?
-        AND vbd.year = ?
-        AND vbd.remaining_days > 0
-      ORDER BY vt.priority ASC
+        svb.total_days,
+        svb.used_days,
+        (svb.total_days - svb.used_days) AS remaining_days,
+        svb.balance_type
+      FROM sp_vacation_balances svb
+      INNER JOIN vacation_types vt ON svb.vacation_type_id = vt.id
+      WHERE svb.user_id = ?
+        AND svb.year = ?
+        AND (svb.total_days - svb.used_days) > 0
+      ORDER BY vt.priority ASC, FIELD(svb.balance_type, 'CARRY_OVER', 'AUTO', 'MANUAL', 'LONG_SERVICE', 'COMPANY_GRANT')
     `, [userId, year]);
     return rows;
   },
@@ -208,52 +209,56 @@ const vacationBalanceModel = {
    */
   async deductByPriority(userId, year, daysToDeduct) {
     const db = await getDb();
+    const conn = await db.getConnection();
+    try {
+      await conn.beginTransaction();
 
-    const [balances] = await db.query(`
-      SELECT vbd.id, vbd.vacation_type_id, vbd.total_days, vbd.used_days,
-             (vbd.total_days - vbd.used_days) as remaining_days,
-             vt.type_code, vt.type_name, vt.priority
-      FROM vacation_balance_details vbd
-      INNER JOIN vacation_types vt ON vbd.vacation_type_id = vt.id
-      WHERE vbd.user_id = ? AND vbd.year = ?
-        AND (vbd.total_days - vbd.used_days) > 0
-      ORDER BY vt.priority ASC
-    `, [userId, year]);
+      const [balances] = await conn.query(`
+        SELECT svb.id, svb.vacation_type_id, svb.total_days, svb.used_days,
+               (svb.total_days - svb.used_days) AS remaining_days,
+               svb.balance_type,
+               vt.type_code, vt.type_name, vt.priority
+        FROM sp_vacation_balances svb
+        INNER JOIN vacation_types vt ON svb.vacation_type_id = vt.id
+        WHERE svb.user_id = ? AND svb.year = ?
+          AND (svb.total_days - svb.used_days) > 0
+        ORDER BY vt.priority ASC, FIELD(svb.balance_type, 'CARRY_OVER', 'AUTO', 'MANUAL', 'LONG_SERVICE', 'COMPANY_GRANT')
+        FOR UPDATE
+      `, [userId, year]);
 
-    if (balances.length === 0) {
-      console.warn(`[VacationBalance] 작업자 ${userId}의 ${year}년 휴가 잔액이 없습니다`);
-      return { success: false, message: '휴가 잔액이 없습니다', deducted: 0 };
-    }
-
-    let remaining = daysToDeduct;
-    const deductions = [];
-
-    for (const balance of balances) {
-      if (remaining <= 0) break;
-
-      const available = parseFloat(balance.remaining_days);
-      const toDeduct = Math.min(remaining, available);
-
-      if (toDeduct > 0) {
-        await db.query(`
-          UPDATE vacation_balance_details
-          SET used_days = used_days + ?, updated_at = NOW()
-          WHERE id = ?
-        `, [toDeduct, balance.id]);
-
-        deductions.push({
-          balance_id: balance.id,
-          type_code: balance.type_code,
-          type_name: balance.type_name,
-          deducted: toDeduct
-        });
-
-        remaining -= toDeduct;
+      if (balances.length === 0) {
+        await conn.rollback();
+        console.warn(`[VacationBalance] 작업자 ${userId}의 ${year}년 휴가 잔액이 없습니다`);
+        return { success: false, message: '휴가 잔액이 없습니다', deducted: 0 };
       }
-    }
 
-    console.log(`[VacationBalance] 작업자 ${userId}: ${daysToDeduct}일 차감 완료`, deductions);
-    return { success: true, deductions, totalDeducted: daysToDeduct - remaining };
+      let remaining = daysToDeduct;
+      const deductions = [];
+
+      for (const balance of balances) {
+        if (remaining <= 0) break;
+        const available = parseFloat(balance.remaining_days);
+        const toDeduct = Math.min(remaining, available);
+        if (toDeduct > 0) {
+          await conn.query(`
+            UPDATE sp_vacation_balances
+            SET used_days = used_days + ?, updated_at = NOW()
+            WHERE id = ?
+          `, [toDeduct, balance.id]);
+          deductions.push({ balance_id: balance.id, type_code: balance.type_code, type_name: balance.type_name, balance_type: balance.balance_type, deducted: toDeduct });
+          remaining -= toDeduct;
+        }
+      }
+
+      await conn.commit();
+      console.log(`[VacationBalance] 작업자 ${userId}: ${daysToDeduct}일 차감 완료`, deductions);
+      return { success: true, deductions, totalDeducted: daysToDeduct - remaining };
+    } catch (err) {
+      await conn.rollback();
+      throw err;
+    } finally {
+      conn.release();
+    }
   },
 
   /**
@@ -261,46 +266,49 @@ const vacationBalanceModel = {
    */
   async restoreByPriority(userId, year, daysToRestore) {
     const db = await getDb();
+    const conn = await db.getConnection();
+    try {
+      await conn.beginTransaction();
 
-    const [balances] = await db.query(`
-      SELECT vbd.id, vbd.vacation_type_id, vbd.used_days,
-             vt.type_code, vt.type_name, vt.priority
-      FROM vacation_balance_details vbd
-      INNER JOIN vacation_types vt ON vbd.vacation_type_id = vt.id
-      WHERE vbd.user_id = ? AND vbd.year = ?
-        AND vbd.used_days > 0
-      ORDER BY vt.priority DESC
-    `, [userId, year]);
+      const [balances] = await conn.query(`
+        SELECT svb.id, svb.vacation_type_id, svb.used_days,
+               svb.balance_type,
+               vt.type_code, vt.type_name, vt.priority
+        FROM sp_vacation_balances svb
+        INNER JOIN vacation_types vt ON svb.vacation_type_id = vt.id
+        WHERE svb.user_id = ? AND svb.year = ?
+          AND svb.used_days > 0
+        ORDER BY vt.priority DESC, FIELD(svb.balance_type, 'COMPANY_GRANT', 'LONG_SERVICE', 'MANUAL', 'AUTO', 'CARRY_OVER')
+        FOR UPDATE
+      `, [userId, year]);
 
-    let remaining = daysToRestore;
-    const restorations = [];
+      let remaining = daysToRestore;
+      const restorations = [];
 
-    for (const balance of balances) {
-      if (remaining <= 0) break;
-
-      const usedDays = parseFloat(balance.used_days);
-      const toRestore = Math.min(remaining, usedDays);
-
-      if (toRestore > 0) {
-        await db.query(`
-          UPDATE vacation_balance_details
-          SET used_days = used_days - ?, updated_at = NOW()
-          WHERE id = ?
-        `, [toRestore, balance.id]);
-
-        restorations.push({
-          balance_id: balance.id,
-          type_code: balance.type_code,
-          type_name: balance.type_name,
-          restored: toRestore
-        });
-
-        remaining -= toRestore;
+      for (const balance of balances) {
+        if (remaining <= 0) break;
+        const usedDays = parseFloat(balance.used_days);
+        const toRestore = Math.min(remaining, usedDays);
+        if (toRestore > 0) {
+          await conn.query(`
+            UPDATE sp_vacation_balances
+            SET used_days = used_days - ?, updated_at = NOW()
+            WHERE id = ?
+          `, [toRestore, balance.id]);
+          restorations.push({ balance_id: balance.id, type_code: balance.type_code, type_name: balance.type_name, balance_type: balance.balance_type, restored: toRestore });
+          remaining -= toRestore;
+        }
       }
-    }
 
-    console.log(`[VacationBalance] 작업자 ${userId}: ${daysToRestore}일 복구 완료`, restorations);
-    return { success: true, restorations, totalRestored: daysToRestore - remaining };
+      await conn.commit();
+      console.log(`[VacationBalance] 작업자 ${userId}: ${daysToRestore}일 복구 완료`, restorations);
+      return { success: true, restorations, totalRestored: daysToRestore - remaining };
+    } catch (err) {
+      await conn.rollback();
+      throw err;
+    } finally {
+      conn.release();
+    }
   },
 
   /**