diff --git a/orders/views.py b/orders/views.py
index c3d360b..f36151d 100644
--- a/orders/views.py
+++ b/orders/views.py
@@ -158,7 +158,15 @@ class CheckoutView(APIView):
                 prod_price = float(it.get('price', total_amount))
                 prod_qty = int(it.get('quantity', 1))
                 prod_id = it.get('id') or 1
-                supplier_id = it.get('supplier_id') or 26
+                supplier_id = it.get('supplier_id')
+
+                # Try looking up product in DB to find accurate supplier_id
+                if not supplier_id or supplier_id == 26:
+                    matched_prod = Product.objects.filter(Q(id=prod_id) | Q(title__iexact=prod_title) | Q(sku__iexact=str(prod_id))).first()
+                    if matched_prod and matched_prod.supplier_id:
+                        supplier_id = matched_prod.supplier_id
+                if not supplier_id:
+                    supplier_id = 26
 
                 SellerOrder.objects.create(
                     supplier_id=supplier_id,
@@ -175,8 +183,11 @@ class CheckoutView(APIView):
                 created_seller_orders = True
 
         if not created_seller_orders:
+            # Fallback seller order
+            first_prod = Product.objects.first()
+            supp_id = first_prod.supplier_id if (first_prod and first_prod.supplier_id) else 26
             SellerOrder.objects.create(
-                supplier_id=26,
+                supplier_id=supp_id,
                 order_id=f"{order.id}-1",
                 date=now().date(),
                 item="Artisan Heritage Creation",
@@ -261,9 +272,13 @@ class OrderHistoryView(APIView):
                 })
             
             # Aggregate status
-            if seller_orders.exists():
+            if order_data.get('status') == 'cancelled':
+                pass  # Already marked cancelled
+            elif seller_orders.exists():
                 statuses = [o.status for o in seller_orders]
-                if 'Pending Acceptance' in statuses:
+                if 'Cancelled' in statuses or 'cancelled' in statuses:
+                    order_data['status'] = 'cancelled'
+                elif 'Pending Acceptance' in statuses:
                     order_data['status'] = 'pending'
                 elif 'Ready to Ship' in statuses:
                     order_data['status'] = 'confirmed'
@@ -632,17 +647,39 @@ class OrderCancelView(APIView):
         return None
 
     def post(self, request, pk=None):
-        order_id = pk or request.data.get('order_id')
+        raw_order_id = pk or request.data.get('order_id')
         reason = request.data.get('reason', 'Customer requested cancellation prior to shipping')
         user = self.get_user(request)
 
+        if not raw_order_id:
+            return Response({'error': 'order_id is required'}, status=status.HTTP_400_BAD_REQUEST)
+
+        # Parse numeric ID if passed as formatted string (e.g., "TRDX-ORD-1" -> 1)
+        import re
+        numeric_id = None
+        if isinstance(raw_order_id, str):
+            digits = re.sub(r'[^0-9]', '', raw_order_id)
+            if digits:
+                numeric_id = int(digits)
+        elif isinstance(raw_order_id, int):
+            numeric_id = raw_order_id
+
+        order = None
+        from django.db.models import Q
         try:
+            qs = Order.objects.all()
             if user:
-                order = Order.objects.get(id=order_id, user=user)
-            else:
-                order = Order.objects.get(id=order_id)
-        except Order.DoesNotExist:
-            return Response({'error': 'Order not found'}, status=status.HTTP_404_NOT_FOUND)
+                qs = qs.filter(user=user)
+            
+            if numeric_id:
+                order = qs.filter(id=numeric_id).first()
+            if not order:
+                order = qs.filter(Q(razorpay_order_id=str(raw_order_id)) | Q(awb_number=str(raw_order_id))).first()
+        except Exception as e:
+            audit_logger.warning(f"OrderCancelView lookup error: {e}")
+
+        if not order:
+            return Response({'error': f'Order {raw_order_id} not found'}, status=status.HTTP_404_NOT_FOUND)
 
         if order.status.lower() in ['shipped', 'delivered']:
             return Response({
@@ -650,6 +687,11 @@ class OrderCancelView(APIView):
             }, status=status.HTTP_400_BAD_REQUEST)
 
         if order.status.lower() == 'cancelled':
+            SellerOrder.objects.filter(
+                Q(order_id__startswith=f"{order.id}-") | 
+                Q(order_id=str(order.id)) | 
+                Q(order_id=str(raw_order_id))
+            ).update(status='Cancelled')
             return Response({'message': 'Order is already cancelled', 'order': OrderSerializer(order).data})
 
         # Call Shadowfax cancel endpoint via shippingservice
@@ -674,7 +716,12 @@ class OrderCancelView(APIView):
         order.shipping_status = 'cancelled'
         order.save()
 
-        SellerOrder.objects.filter(order_id__startswith=f"{order.id}-").update(status='Cancelled')
+        # Mark matching SellerOrders as Cancelled in database
+        SellerOrder.objects.filter(
+            Q(order_id__startswith=f"{order.id}-") | 
+            Q(order_id=str(order.id)) | 
+            Q(order_id=str(raw_order_id))
+        ).update(status='Cancelled')
 
         audit_logger.info(f"AUDIT - Order Cancelled: Order ID {order.id} cancelled. Reason: '{reason}'.")
 
diff --git a/products/serializers.py b/products/serializers.py
index 963fa0f..8d4e5e6 100644
--- a/products/serializers.py
+++ b/products/serializers.py
@@ -34,7 +34,7 @@ class ProductSerializer(serializers.ModelSerializer):
     class Meta:
         model = Product
         fields = [
-            'id', 'category', 'category_name', 'title', 'name', 'price', 'mrp', 
+            'id', 'supplier_id', 'category', 'category_name', 'title', 'name', 'price', 'mrp', 
             'stock', 'sku', 'image', 'image_url', 'description', 'is_gi_tagged', 
             'shipping_profile', 'package_weight', 'upload_source', 'status', 'is_active'
         ]