diff --git a/app/Models/StickerMappingMaster.php b/app/Models/StickerMappingMaster.php
index 6f27e1d..1a8c42c 100644
--- a/app/Models/StickerMappingMaster.php
+++ b/app/Models/StickerMappingMaster.php
@@ -12,7 +12,7 @@ class StickerMappingMaster extends Model
 
     protected $fillable = [
         'plant_id',
-        'item_characteristic_id',
+        'item_id',
 
         'sticker_structure1_id',
         'sticker1_machine_id',
@@ -50,11 +50,6 @@ class StickerMappingMaster extends Model
         return $this->belongsTo(Plant::class);
     }
 
-    public function itemCharacteristic()
-    {
-        return $this->belongsTo(ItemCharacteristic::class);
-    }
-
     public function item(): BelongsTo
     {
         return $this->belongsTo(Item::class, 'item_id');