diff --git a/app/Http/Controllers/PdfController.php b/app/Http/Controllers/PdfController.php
index 8dead71..d53e0a2 100644
--- a/app/Http/Controllers/PdfController.php
+++ b/app/Http/Controllers/PdfController.php
@@ -466,16 +466,31 @@ class PdfController extends Controller
         // return response()->json([
         //     'serial_numbers' => $serialNumbers
         // ], 200);
-        $itemId = $grRecords->first()->item_id;
+        // $itemId = $grRecords->first()->item_id;
 
-        $itemCode = $itemId ? optional(Item::find($itemId))->code : null;
+        // $itemCode = $itemId ? optional(Item::find($itemId))->code : null;
 
-        $serialNumbers = $grRecords->pluck('serial_number')->toArray();
+        // $serialNumbers = $grRecords->pluck('serial_number')->toArray();
 
-        return response()->json([
-            'item_code' => $itemCode,
-            'serial_numbers' => $serialNumbers
-        ], 200);
+        // return response()->json([
+        //     'item_code' => $itemCode,
+        //     'serial_numbers' => $serialNumbers
+        // ], 200);
+        $itemIds = $grRecords->pluck('item_id')->unique()->filter();
+
+            // Fetch item_codes in one query
+            $items = Item::whereIn('id', $itemIds)->pluck('code', 'id');
+            // ['id' => 'item_code']
+
+            // Group serial numbers by item_id
+            $result = $grRecords->groupBy('item_id')->map(function ($group, $itemId) use ($items) {
+                return [
+                    'item_code' => $items[$itemId] ?? null,
+                    'serial_numbers' => $group->pluck('serial_number')->toArray()
+                ];
+            })->values(); // remove keys
+
+            return response()->json($result, 200);
     }