diff --git a/services/notification_error.service.js b/services/notification_error.service.js
index 877c903..349abdc 100644
--- a/services/notification_error.service.js
+++ b/services/notification_error.service.js
@@ -174,56 +174,86 @@ class NotificationService {
     const deviceNotification = await getNotificationByIdDb(id);
     if (!deviceNotification) throw new ErrorHandler(404, "Data not found");
 
-    const errorCode = await getErrorCodeByIdDb(deviceNotification.error_code_id);
+    const errorCode = await getErrorCodeByIdDb(
+      deviceNotification.error_code_id
+    );
     const dataExist = await getUsersNotificationErrorDb(id);
-    const activeUsers = dataExist?.filter((user) => user.is_active === true) || [];
 
-    if (activeUsers.length < 1) throw new ErrorHandler(404, "No active contacts");
+    const activeUsers =
+      dataExist?.filter((user) => user.is_active === true) || [];
 
-    this._executeResendInBackground(id, activeUsers, deviceNotification, errorCode)
-        .catch(err => console.log("error:", err));
+    if (activeUsers.length < 1)
+      throw new ErrorHandler(404, "No active contacts");
+
+    this._executeResendInBackground(
+      id,
+      activeUsers,
+      deviceNotification,
+      errorCode
+    ).catch((err) => console.error("Background Process Error:", err));
 
     return {
-        status: "success",
-        message: "Pesan sedang diproses di background",
-        count: activeUsers.length
+      count: activeUsers.length,
     };
-}
+  }
 
-static async _executeResendInBackground(id, activeUsers, deviceNotification, errorCode) {
-    console.log(`Background process untuk ID: ${id}`);
+  static async _executeResendInBackground(
+    id,
+    activeUsers,
+    deviceNotification,
+    errorCode
+  ) {
+    console.log(`process untuk ID: ${id}`);
 
-    for (const user of activeUsers) {
-        try {
-            console.log(`Mengirim ke: ${user.contact_phone}`);
+    const sendPromises = activeUsers.map(async (user) => {
+      try {
+        const tokenRedirect = await generateTokenRedirect(
+          user.contact_phone,
+          user.contact_name,
+          id
+        );
+        const encodedToken = encodeURIComponent(tokenRedirect);
+        const shortUrl = await shortUrltiny(encodedToken);
 
-            const tokenRedirect = await generateTokenRedirect(user.contact_phone, user.contact_name, id);
-            const encodedToken = encodeURIComponent(tokenRedirect);
-            
-            const shortUrl = await shortUrltiny(encodedToken);
-            console.log(`Link: ${shortUrl}`);
+        const bodyWithUrl =
+          `Hai ${user.contact_name || "-"}\n` +
+          `Terjadi peringatan dengan kode ${errorCode?.error_code || "-"} - ${
+            errorCode?.error_code_name
+          } pada device ${deviceNotification.device_name || "-"}.\n` +
+          `Silahkan cek detail pada link berikut:\n ${shortUrl}`;
 
-            const bodyWithUrl = `Hai ${user.contact_name || "-"}\n` +
-                `Terjadi peringatan dengan kode ${errorCode?.error_code || "-"} - ${errorCode?.error_code_name}  pada device ${deviceNotification.device_name || "-"}.\n` +
-                `silahkan cek detail pada link berikut:\n ${shortUrl}`;
+        const resultSend = await sendNotifikasi(
+          user.contact_phone,
+          bodyWithUrl
+        );
 
-            const resultSend = await sendNotifikasi(user.contact_phone, bodyWithUrl);
-            
-            console.log(`WHATSAPP API Respon:`, JSON.stringify(resultSend));
+        const isSuccess = resultSend?.error ? false : true;
 
-            const isSuccess = !resultSend?.error;
+        await updateNotificationErrorDb(user.notification_error_id, {
+          is_send: isSuccess,
+          is_delivered: isSuccess,
+        });
 
-            await updateNotificationErrorDb(user.notification_error_id, {
-                is_send: isSuccess,
-                is_delivered: isSuccess,
-            });
+        return { phone: user.contact_phone, status: "success" };
+      } catch (err) {
+        console.error(`Gagal mengirim ke ${user.contact_phone}:`, err.message);
+        return {
+          phone: user.contact_phone,
+          status: "failed",
+          error: err.message,
+        };
+      }
+    });
 
-        } catch (err) {
-            console.log(`error pada ${user.contact_phone}:`, err.message);
-        }
-    }
-    console.log(` pesan untuk ID: ${id} selesai diproses.`);
-}
+    const results = await Promise.all(sendPromises);
+
+    console.log(
+      `Resend chat: ${
+        results.filter((r) => r.status === "success").length
+      }, Gagal: ${results.filter((r) => r.status === "failed").length}`
+    );
+  }
+  
 }
 
 module.exports = NotificationService;