diff --git a/app/Http/Controllers/PdfController.php b/app/Http/Controllers/PdfController.php
index a51b5ad..6d7447f 100644
--- a/app/Http/Controllers/PdfController.php
+++ b/app/Http/Controllers/PdfController.php
@@ -231,7 +231,38 @@ class PdfController extends Controller
             ], 400);
         }
 
-        // foreach ($data['item_codes'] as $item)
+        $alreadyCompleted = [];
+
+        foreach ($data['item_codes'] as $item) {
+            $itemCode = $item['item_code'];
+            $serialNumbers = $item['serial_numbers'];
+
+            $itemId = Item::where('code', $itemCode)->value('id');
+
+            foreach ($serialNumbers as $serial) {
+                $gr = GRMaster::where('plant_id', $plantId)
+                    ->where('item_id', $itemId)
+                    ->where('gr_number', $data['gr_number'])
+                    ->where('serial_number', $serial)
+                    ->first();
+
+                if (!$gr) {
+                    continue;
+                }
+
+                if ($gr->status == 'Completed') {
+                    $alreadyCompleted[] = $serial;
+                }
+            }
+        }
+
+        if (!empty($alreadyCompleted)) {
+            return response()->json([
+                'status_code' => 'ERROR',
+                'status_description' => 'Below serial numbers are already completed',
+                'serial_numbers' => $alreadyCompleted
+            ], 400);
+        }
         // {
         //     $itemCode = $item['item_code'];
         //     $serialNumbers = $item['serial_numbers'];