diff --git a/app/Http/Controllers/InvoiceController.php b/app/Http/Controllers/InvoiceController.php
index d8c29fb2..f20e6914 100644
--- a/app/Http/Controllers/InvoiceController.php
+++ b/app/Http/Controllers/InvoiceController.php
@@ -36,7 +36,7 @@ class InvoiceController extends Controller
 
     }
 
-    public function getSupplierPO($id)
+    public function getSupplierDO($id)
     {
 
     }
diff --git a/database/migrations/2020_08_24_161747_add_fields_to_invoice.php b/database/migrations/2020_08_24_161747_add_fields_to_invoice.php
new file mode 100644
index 00000000..df44829e
--- /dev/null
+++ b/database/migrations/2020_08_24_161747_add_fields_to_invoice.php
@@ -0,0 +1,39 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddFieldsToInvoice extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('invoices', function (Blueprint $table) {
+            $table->string('buyer_company', 50);
+            $table->string('reg_no', 100);
+            $table->string('address', 120);
+            $table->string('contact_no', 20);
+            $table->string('po_number', 20);
+            $table->string('order_no', 20);
+            $table->double('tax_rate')->default(0);
+            $table->double('billing_charge_rate');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('invoices', function (Blueprint $table) {
+            //
+        });
+    }
+}
diff --git a/database/migrations/2020_08_24_170514_add_invoice_details.php b/database/migrations/2020_08_24_170514_add_invoice_details.php
new file mode 100644
index 00000000..02dbb3b2
--- /dev/null
+++ b/database/migrations/2020_08_24_170514_add_invoice_details.php
@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddInvoiceDetails extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('invoice_details', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('order');
+            $table->string('description');
+            $table->integer('quantity');
+            $table->double('unit_price');
+            $table->string('stock_code');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('invoice_details');
+    }
+}
diff --git a/database/migrations/2020_08_24_173533_add_foreign_id_to_invoice_details.php b/database/migrations/2020_08_24_173533_add_foreign_id_to_invoice_details.php
new file mode 100644
index 00000000..99ab7f1c
--- /dev/null
+++ b/database/migrations/2020_08_24_173533_add_foreign_id_to_invoice_details.php
@@ -0,0 +1,39 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Query\Expression;
+use Illuminate\Database\Migrations\Migration;
+
+class AddForeignIdToInvoiceDetails extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('invoice_details', function (Blueprint $table) {
+            $table->integer('invoice_id')->unsigned();
+
+            $table->foreign('invoice_id')
+                    ->references('id')
+                    ->on('invoices')
+                    ->onDelete('cascade');
+            
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('invoice_details', function (Blueprint $table) {
+            //
+        });
+    }
+}
diff --git a/database/migrations/2020_08_24_181820_create_invoice_status.php b/database/migrations/2020_08_24_181820_create_invoice_status.php
new file mode 100644
index 00000000..86ad70f0
--- /dev/null
+++ b/database/migrations/2020_08_24_181820_create_invoice_status.php
@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateInvoiceStatus extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('invoice_statuses', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('status', 20);
+            $table->string('comment');
+            $table->timestamps();
+            $table->integer('invoice_id')->unsigned();
+            $table->foreign('invoice_id')
+                    ->references('id')
+                    ->on('invoices')
+                    ->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('invoice_statuses');
+    }
+}
diff --git a/routes/api.php b/routes/api.php
index 72226b63..ebad7dfe 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -137,7 +137,7 @@ Route::group(['middleware' => ['role:admin']], function() {
 	Route::patch('invoice/{id}/status', 'InvoiceController@updateStatus');
 	Route::get('invoice/{id}/po', 'InvoiceController@getPO');
 	Route::get('invoice/{id}/do', 'InvoiceController@getDO');
-	Route::get('invoice/{id}/supplierpo', 'InvoiceController@supplierPO');
+	Route::get('invoice/{id}/supplierdo', 'InvoiceController@supplierDO');
 
 	Route::get('admin/complete-orders', 'BookingController@adminShowCompletedOrders');
 	// for both user and admin