diff --git a/app/Http/Controllers/SapFileController.php b/app/Http/Controllers/SapFileController.php
index 36c447e..c120c94 100644
--- a/app/Http/Controllers/SapFileController.php
+++ b/app/Http/Controllers/SapFileController.php
@@ -180,40 +180,71 @@ class SapFileController extends Controller
 
 
         // Prepare arrays
-        $serialNumbers = [];
-        $remainingRows = [];
+        // $serialNumbers = [];
+        // $remainingRows = [];
 
-        foreach ($lines as $line)
-        {
+        // foreach ($lines as $line)
+        // {
+        //     $values = str_getcsv($line);
+
+        //     // Debug: make sure CSV split is correct
+        //     if (count($values) < 6) {
+        //         return response()->json([
+        //             'status' => 'ERROR',
+        //             'message' => 'In text file has fewer than 6 columns',
+        //             'line' => $line
+        //         ], 400);
+        //     }
+
+        //     $serialNumbers[] = $values[5] ?? null;
+
+        //     $remainingRow = $values;
+        //     unset($remainingRow[5]);
+        //     // $remainingRow = array_values($remainingRow); // reindex
+        //     // $remainingRows[] = $remainingRow;
+        //      $remainingRow = array_values($remainingRow); // reindex
+
+        //     // Only add unique remaining rows
+        //     if (!in_array($remainingRow, $remainingRows, true)) {
+        //         $remainingRows[] = $remainingRow;
+        //     }
+        // }
+
+        // return response()->json([
+        //     'status' => 'SUCCESS',
+        //     'serial_numbers' => $serialNumbers,
+        //     'remaining_rows_sample' => array_slice($remainingRows, 0, 5), // just first 5 for debug
+        // ]);
+
+        $serialNumbers = [];
+        $remainingRow = null;
+
+        foreach ($lines as $line) {
             $values = str_getcsv($line);
 
-            // Debug: make sure CSV split is correct
             if (count($values) < 6) {
                 return response()->json([
                     'status' => 'ERROR',
-                    'message' => 'In text file has fewer than 6 columns',
+                    'message' => 'Text file row has fewer than 6 columns',
                     'line' => $line
                 ], 400);
             }
 
+            // Collect serial number
             $serialNumbers[] = $values[5] ?? null;
 
-            $remainingRow = $values;
-            unset($remainingRow[5]);
-            // $remainingRow = array_values($remainingRow); // reindex
-            // $remainingRows[] = $remainingRow;
-             $remainingRow = array_values($remainingRow); // reindex
-
-            // Only add unique remaining rows
-            if (!in_array($remainingRow, $remainingRows, true)) {
-                $remainingRows[] = $remainingRow;
+            // Store remaining row only once
+            if ($remainingRow === null) {
+                $remainingRow = $values;
+                unset($remainingRow[5]); // remove serial number
+                $remainingRow = array_values($remainingRow); // reindex
             }
         }
 
         return response()->json([
             'status' => 'SUCCESS',
             'serial_numbers' => $serialNumbers,
-            'remaining_rows_sample' => array_slice($remainingRows, 0, 5), // just first 5 for debug
+            'remaining_row' => $remainingRow, // only one copy
         ]);
     }