diff --git a/services/meetingService.js b/services/meetingService.js
index bc7b7f784f9027f83f0ae5f777e50384c0a82e1d..d96dc3f6e9e2c38de4732f30aa729458a383d33e 100644
--- a/services/meetingService.js
+++ b/services/meetingService.js
@@ -119,8 +119,8 @@ class MeetingService {
             );
 
             const time_indices = Array.from(
-                { length: time_idx_end - time_idx_start + 1 },
-                (_, i) => time_idx_start + i
+                { length: parseInt(time_idx_end) - parseInt(time_idx_start) + 1 },
+                (_, i) => (parseInt(time_idx_start) + i).toString()
             );
             await ScheduleService.createSchedules({
                 userId: created_by,
diff --git a/services/scheduleService.js b/services/scheduleService.js
index e9700e480b3afd25eb9dedf1bd0f69358f9a07ef..b5cd9cd4578efb9e2d563d6edf3fb9052a3e84d0 100644
--- a/services/scheduleService.js
+++ b/services/scheduleService.js
@@ -10,11 +10,17 @@ class ScheduleService {
      * @param {object} [transaction] - Sequelize �몃옖��뀡 媛앹껜 -> 誘명똿諛⑹뿉�� �곌린�꾪빐 �몃옖��뀡�� �섍꺼諛쏅뒗嫄� 異붽� 
      */
     async createSchedules({ userId, title, is_fixed, time_indices }, transaction = null) {
+        const parsedTimeIndices = time_indices.map(idx => parseInt(idx, 10));
+
+        if (!userId || !title || !parsedTimeIndices.length) {
+            throw new Error('Required parameters missing');
+        }
+
         const overlaps = await Schedule.findAll({
             where: {
                 user_id: userId,
                 time_idx: {
-                    [Op.in]: time_indices
+                    [Op.in]: parsedTimeIndices
                 }
             },
             transaction
@@ -24,25 +30,14 @@ class ScheduleService {
             throw new Error(`Schedule overlaps at time_idx ${overlaps[0].time_idx}`);
         }
 
-        const scheduleData = time_indices.map(time_idx => ({
+        const scheduleData = parsedTimeIndices.map(time_idx => ({
             user_id: userId,
             title,
-            time_idx: parseInt(time_idx, 10),
+            time_idx,
             is_fixed
         }));
 
         try {
-            if (!userId || !title || !time_indices) {
-                throw new Error('Required parameters missing');
-            }
-    
-            console.log('Creating schedule with data:', {
-                userId,
-                title,
-                is_fixed,
-                time_indices
-            });
-
             const createdSchedules = await Schedule.bulkCreate(scheduleData, {
                 transaction,
                 returning: true,
@@ -54,7 +49,7 @@ class ScheduleService {
                 user_id: userId,
                 title,
                 is_fixed,
-                time_indices,
+                time_indices: parsedTimeIndices,
                 createdAt: createdSchedules[0].createdAt,
                 updatedAt: createdSchedules[0].updatedAt
             };