diff --git a/app/Filament/Resources/ProcessOrderResource.php b/app/Filament/Resources/ProcessOrderResource.php
index c269506..23836a4 100644
--- a/app/Filament/Resources/ProcessOrderResource.php
+++ b/app/Filament/Resources/ProcessOrderResource.php
@@ -9,6 +9,7 @@ use App\Models\Item;
 use App\Models\Line;
 use App\Models\Plant;
 use App\Models\ProcessOrder;
+use App\Models\ProductCharacteristicsMaster;
 use Closure;
 use Filament\Facades\Filament;
 use Filament\Forms;
@@ -130,11 +131,14 @@ class ProcessOrderResource extends Resource
                     ->reactive()
                     ->options(function (callable $get) {
                         $plantId = $get('plant_id');
-                        if (empty($plantId)) {
+                        $lineId = $get('line_id');
+                        if (empty($plantId) || empty($lineId)) {
                             return [];
                         }
 
-                        return Item::where('plant_id', $plantId)->pluck('code', 'id');
+                        $availItems = ProductCharacteristicsMaster::where('plant_id', $plantId)->where('line_id', $lineId)->pluck('item_id', 'item_id')->toArray();
+
+                        return Item::where('plant_id', $plantId)->whereIn('id', $availItems)->pluck('code', 'id'); // return Item::where('plant_id', $plantId)->pluck('code', 'id');
                     })
                     ->disabled(fn (Get $get) => ! empty($get('id')))
                     ->afterStateUpdated(function (callable $set, callable $get, ?string $state) {