diff --git a/app/Filament/Resources/CharacteristicApproverMasterResource.php b/app/Filament/Resources/CharacteristicApproverMasterResource.php
index a4244de..36e7f11 100644
--- a/app/Filament/Resources/CharacteristicApproverMasterResource.php
+++ b/app/Filament/Resources/CharacteristicApproverMasterResource.php
@@ -411,7 +411,7 @@ class CharacteristicApproverMasterResource extends Resource
                                 if ($userHas && strlen($userHas) > 0) {
                                     return Plant::where('id', $userHas)->pluck('name', 'id')->toArray();
                                 } else {
-                                    return Plant::whereHas('requestCharacteristics', function ($query) {
+                                    return Plant::whereHas('characteristicApproverMaster', function ($query) {
                                         $query->whereNotNull('id');
                                     })->orderBy('code')->pluck('name', 'id');
                                 }
@@ -434,7 +434,7 @@ class CharacteristicApproverMasterResource extends Resource
                                     return [];
                                 }
 
-                                return Machine::whereHas('requestCharacteristics', function ($query) use ($plantId) {
+                                return Machine::whereHas('characteristicApproverMaster', function ($query) use ($plantId) {
                                     if ($plantId) {
                                         $query->where('plant_id', $plantId);
                                     }
diff --git a/app/Models/Machine.php b/app/Models/Machine.php
index dd21db5..bcd2209 100644
--- a/app/Models/Machine.php
+++ b/app/Models/Machine.php
@@ -53,6 +53,11 @@ class Machine extends Model
         return $this->hasMany(RequestCharacteristic::class, 'machine_id', 'id');
     }
 
+    public function characteristicApproverMaster()
+    {
+        return $this->hasMany(CharacteristicApproverMaster::class, 'machine_id', 'id');
+    }
+
     public function productionCharacteristics()
     {
         return $this->hasMany(ProductionCharacteristic::class, 'machine_id', 'id');
diff --git a/app/Models/Plant.php b/app/Models/Plant.php
index 113dab2..5a5e9aa 100644
--- a/app/Models/Plant.php
+++ b/app/Models/Plant.php
@@ -193,4 +193,9 @@ class Plant extends Model
     // {
     //     return $this->hasMany(LocatorValidation::class, 'plant_id', 'id');
     // }
+
+    public function characteristicApproverMaster()
+    {
+        return $this->hasMany(CharacteristicApproverMaster::class, 'plant_id', 'id');
+    }
 }