diff --git a/.gitignore b/.gitignore
index d9535c5..8549ccb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@ Thumbs.db
 /docs/pptx_build
 /docs/presentation
 docs/Monthly_Report_2026_01.pptx
+docs/f6_1770350984272.xlsx
diff --git a/app/Modules/Integration/Controllers/ProductSyncController.php b/app/Modules/Integration/Controllers/ProductSyncController.php
index af939ff..8cd1bf6 100644
--- a/app/Modules/Integration/Controllers/ProductSyncController.php
+++ b/app/Modules/Integration/Controllers/ProductSyncController.php
@@ -22,7 +22,6 @@ class ProductSyncController extends Controller
             'external_pos_id' => 'required|string',
             'name' => 'required|string',
             'price' => 'nullable|numeric',
-            'sku' => 'nullable|string',
             'barcode' => 'nullable|string',
             'category' => 'nullable|string',
             'unit' => 'nullable|string',
diff --git a/app/Modules/Inventory/Models/Product.php b/app/Modules/Inventory/Models/Product.php
index 771eba5..29bb27d 100644
--- a/app/Modules/Inventory/Models/Product.php
+++ b/app/Modules/Inventory/Models/Product.php
@@ -18,7 +18,6 @@ class Product extends Model
     protected $fillable = [
         'code',
         'barcode',
-        'sku',
         'name',
         'external_pos_id',
         'category_id',
diff --git a/app/Modules/Inventory/Services/ProductService.php b/app/Modules/Inventory/Services/ProductService.php
index 26b4bac..3df7832 100644
--- a/app/Modules/Inventory/Services/ProductService.php
+++ b/app/Modules/Inventory/Services/ProductService.php
@@ -38,12 +38,11 @@ class ProductService
             // Map allowed fields
             $product->name = $data['name'];
             $product->barcode = $data['barcode'] ?? $product->barcode;
-            $product->sku = $data['sku'] ?? $product->sku; // Maybe allow SKU update?
             $product->price = $data['price'] ?? 0;
             
-            // Generate Code if missing (use sku or external_id)
+            // Generate Code if missing (use code or external_id)
             if (empty($product->code)) {
-                $product->code = $data['code'] ?? ($product->sku ?? $product->external_pos_id);
+                $product->code = $data['code'] ?? $product->external_pos_id;
             }
             
             // Handle Category (Default: 未分類)
diff --git a/database/migrations/tenant/2026_02_09_110739_drop_sku_from_products_table.php b/database/migrations/tenant/2026_02_09_110739_drop_sku_from_products_table.php
new file mode 100644
index 0000000..8106b0a
--- /dev/null
+++ b/database/migrations/tenant/2026_02_09_110739_drop_sku_from_products_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->dropColumn('sku');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            //
+        });
+    }
+};
diff --git a/resources/js/Pages/Inventory/GoodsReceipt/Create.tsx b/resources/js/Pages/Inventory/GoodsReceipt/Create.tsx
index 30e3637..5fdd967 100644
--- a/resources/js/Pages/Inventory/GoodsReceipt/Create.tsx
+++ b/resources/js/Pages/Inventory/GoodsReceipt/Create.tsx
@@ -123,7 +123,7 @@ export default function GoodsReceiptCreate({ warehouses, pendingPurchaseOrders,
             product_id: item.product_id,
             purchase_order_item_id: item.id,
             product_name: item.product_name,
-            sku: item.product_code,
+            product_code: item.product_code,
             unit: item.unit,
             quantity_ordered: item.quantity,
             quantity_received_so_far: item.received_quantity,
@@ -157,7 +157,7 @@ export default function GoodsReceiptCreate({ warehouses, pendingPurchaseOrders,
         const newItem = {
             product_id: product.id,
             product_name: product.name,
-            sku: product.code,
+            product_code: product.code,
             quantity_received: 0,
             unit_price: product.price || 0,
             batch_number: '',
@@ -266,7 +266,7 @@ export default function GoodsReceiptCreate({ warehouses, pendingPurchaseOrders,
                 // Note: fetch might not have returned yet, so seq might be default 001 until fetch updates nextSequences
 
                 const datePart = dateStr.replace(/-/g, '');
-                const generatedBatch = `${item.sku}-${country}-${datePart}-${seq}`;
+                const generatedBatch = `${item.product_code}-${country}-${datePart}-${seq}`;
 
                 if (item.batch_number !== generatedBatch) {
                     // Update WITHOUT triggering re-render loop
@@ -278,7 +278,7 @@ export default function GoodsReceiptCreate({ warehouses, pendingPurchaseOrders,
                 }
             }
         });
-    }, [nextSequences, JSON.stringify(data.items.map(i => ({ m: i.batchMode, c: i.originCountry, s: i.sku, p: i.product_id }))), data.received_date]);
+    }, [nextSequences, JSON.stringify(data.items.map(i => ({ m: i.batchMode, c: i.originCountry, s: i.product_code, p: i.product_id }))), data.received_date]);
 
     const submit = (e: React.FormEvent) => {
         e.preventDefault();
@@ -610,7 +610,7 @@ export default function GoodsReceiptCreate({ warehouses, pendingPurchaseOrders,
                                                                             <TableCell>
                                                                                 <div className="flex flex-col">
                                                                                     <span className="font-medium text-gray-900">{item.product_name}</span>
-                                                                                    <span className="text-xs text-gray-500">{item.sku}</span>
+                                                                                    <span className="text-xs text-gray-500">{item.product_code}</span>
                                                                                 </div>
                                                                             </TableCell>
 
@@ -654,7 +654,7 @@ export default function GoodsReceiptCreate({ warehouses, pendingPurchaseOrders,
                                                                                         className="w-16 text-center px-1"
                                                                                     />
                                                                                     <div className="flex-1 text-sm font-mono bg-gray-50 px-3 py-2 rounded text-gray-600 truncate">
-                                                                                        {getBatchPreview(item.product_id, item.sku, item.originCountry || 'TW', data.received_date)}
+                                                                                        {getBatchPreview(item.product_id, item.product_code, item.originCountry || 'TW', data.received_date)}
                                                                                     </div>
                                                                                 </div>
                                                                             </TableCell>