diff --git a/inventory-backend/app/models/transaction.py b/inventory-backend/app/models/transaction.py
index 3ac662f..5e634eb 100644
--- a/inventory-backend/app/models/transaction.py
+++ b/inventory-backend/app/models/transaction.py
@@ -90,3 +90,41 @@ class TransRepair(db.Model):
             'created_at': self.created_at.strftime('%Y-%m-%d %H:%M:%S') if self.created_at else None,
             'updated_at': self.updated_at.strftime('%Y-%m-%d %H:%M:%S') if self.updated_at else None,
         }
+
+class TransScrap(db.Model):
+    __tablename__ = 'trans_scrap'
+
+    id = db.Column(db.Integer, primary_key=True)
+    sku = db.Column(db.String(100))
+    source_table = db.Column(db.String(50))
+    stock_id = db.Column(db.Integer)
+    
+    quantity = db.Column(db.Numeric(19, 4))
+    reason = db.Column(db.Text)
+    operator_name = db.Column(db.String(100))
+    approver_name = db.Column(db.String(100))
+    approval_status = db.Column(db.String(20), default='pending')
+    cost_at_scrap = db.Column(db.Numeric(10, 2))
+    total_loss = db.Column(db.Numeric(10, 2))
+    operation_time = db.Column(db.DateTime, default=datetime.now)
+    
+    created_at = db.Column(db.DateTime, default=datetime.now)
+    updated_at = db.Column(db.DateTime, default=datetime.now, onupdate=datetime.now)
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'sku': self.sku,
+            'source_table': self.source_table,
+            'stock_id': self.stock_id,
+            'quantity': float(self.quantity) if self.quantity is not None else None,
+            'reason': self.reason,
+            'operator_name': self.operator_name,
+            'approver_name': self.approver_name,
+            'approval_status': self.approval_status,
+            'cost_at_scrap': float(self.cost_at_scrap) if self.cost_at_scrap is not None else None,
+            'total_loss': float(self.total_loss) if self.total_loss is not None else None,
+            'operation_time': self.operation_time.strftime('%Y-%m-%d %H:%M:%S') if self.operation_time else None,
+            'created_at': self.created_at.strftime('%Y-%m-%d %H:%M:%S') if self.created_at else None,
+            'updated_at': self.updated_at.strftime('%Y-%m-%d %H:%M:%S') if self.updated_at else None,
+        }
diff --git a/inventory-backend/app/services/inbound/service_service.py b/inventory-backend/app/services/inbound/service_service.py
index 5f888be..4dea2e4 100644
--- a/inventory-backend/app/services/inbound/service_service.py
+++ b/inventory-backend/app/services/inbound/service_service.py
@@ -1,6 +1,6 @@
 from app import db
 from app.models.inbound.service import StockService
-from app.models.material_base import MaterialBase
+from app.models.base import MaterialBase
 from datetime import datetime, timedelta
 import re