diff --git a/app/Filament/Imports/StickerPrintingImporter.php b/app/Filament/Imports/StickerPrintingImporter.php
index 17bf171..e70e51d 100644
--- a/app/Filament/Imports/StickerPrintingImporter.php
+++ b/app/Filament/Imports/StickerPrintingImporter.php
@@ -2,15 +2,14 @@
 
 namespace App\Filament\Imports;
 
+use App\Models\Plant;
 use App\Models\StickerPrinting;
+use Filament\Actions\Imports\Exceptions\RowImportFailedException;
 use Filament\Actions\Imports\ImportColumn;
 use Filament\Actions\Imports\Importer;
 use Filament\Actions\Imports\Models\Import;
-use Filament\Actions\Imports\Exceptions\RowImportFailedException;
-use App\Models\Plant;
-use App\Models\User;
-use Str;
 use Filament\Facades\Filament;
+use Str;
 
 class StickerPrintingImporter extends Importer
 {
@@ -49,33 +48,29 @@ class StickerPrintingImporter extends Importer
         // ]);
 
         $warnMsg = [];
-        $plant = Plant::where('code', $this->data['plant'])->first();
-
-        if (Str::length($this->data['serial_number']) < 9 || !ctype_alnum($this->data['serial_number'])) {
-            $warnMsg[] = "Invalid serial number found";
-        }
-
-        $existing = StickerPrinting::where('plant_id', $plant->id)
-            ->where('serial_number', $this->data['serial_number'])
-            ->first();
-
-        if ($existing) {
-            $warnMsg[] = "Serial number already exists for this plant!";//throw new RowImportFailedException("Serial number already exists for this plant!");
-        }
-
+        $plantCod = $this->data['plant'];
+        $plant = null;
         $serial = $this->data['serial_number'];
 
-        // --- Check duplicate in DB ---
-        $existsInDB = StickerPrinting::where('plant_id', $plant->id)
-            ->where('serial_number', $serial)
-            ->first();
-
-        if ($existsInDB) {
-            //throw new RowImportFailedException("Serial number '{$serial}' already exists in DB for this plant!");
-            $warnMsg[] = "Serial number '{$serial}' already exists in DB for this plant!";
+        if (Str::length($plantCod) < 4 || ! is_numeric($plantCod) || ! preg_match('/^[1-9]\d{3,}$/', $plantCod)) {
+            $warnMsg[] = 'Invalid plant code found';
+        } else {
+            $plant = Plant::where('code', $plantCod)->first();
+            if (! $plant) {
+                $warnMsg[] = 'Plant not found!';
+            }
         }
 
-        if (!empty($warnMsg)) {
+        if (Str::length($serial) < 9 || ! ctype_alnum($serial)) {
+            $warnMsg[] = 'Invalid serial number found';
+        } elseif ($plant) {
+            $existing = StickerPrinting::where('plant_id', $plant->id)->where('serial_number', $serial)->first();
+            if ($existing) {
+                $warnMsg[] = "Serial number '{$serial}' already exists for plant '{$plantCod}'!"; // throw new RowImportFailedException("Serial number already exists for this plant!");
+            }
+        }
+
+        if (! empty($warnMsg)) {
             throw new RowImportFailedException(implode(', ', $warnMsg));
         }
 
@@ -84,21 +79,21 @@ class StickerPrintingImporter extends Importer
             'reference_number' => $this->data['reference_number'],
             'serial_number' => $this->data['serial_number'],
             'created_at' => now(),
-            'updated_at' =>now(),
+            'updated_at' => now(),
             'created_by' => Filament::auth()->user()?->name,
         ]);
 
         return null;
 
-        //return new StickerPrinting();
+        // return new StickerPrinting();
     }
 
     public static function getCompletedNotificationBody(Import $import): string
     {
-        $body = 'Your sticker printing import has completed and ' . number_format($import->successful_rows) . ' ' . str('row')->plural($import->successful_rows) . ' imported.';
+        $body = 'Your sticker printing import has completed and '.number_format($import->successful_rows).' '.str('row')->plural($import->successful_rows).' imported.';
 
         if ($failedRowsCount = $import->getFailedRowsCount()) {
-            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to import.';
+            $body .= ' '.number_format($failedRowsCount).' '.str('row')->plural($failedRowsCount).' failed to import.';
         }
 
         return $body;