diff --git a/app/Export/CSV/InvoiceExport.php b/app/Export/CSV/InvoiceExport.php
new file mode 100644
index 000000000000..a0beec29c821
--- /dev/null
+++ b/app/Export/CSV/InvoiceExport.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace App\Export\CSV
+
+class InvoiceExport
+{
+
+}
\ No newline at end of file
diff --git a/app/Http/Controllers/ImportController.php b/app/Http/Controllers/ImportController.php
index 6d9c7eeeb2c2..8df74c74f19d 100644
--- a/app/Http/Controllers/ImportController.php
+++ b/app/Http/Controllers/ImportController.php
@@ -13,11 +13,56 @@ namespace App\Http\Controllers;
 
 use App\Http\Controllers\Controller;
 use App\Http\Requests\Import\PreImportRequest;
+use App\Import\Definitions
+
+class InvoiceMap
+{
+
+    public static function importable()
+    {
+        return [
+            0 => 'number',
+            1 => 'user_id',
+            2 => 'amount',
+            3 => 'balance',
+            4 => 'client_id',
+            5 => 'status_id',
+            6 => 'is_deleted',
+            7 => 'number',
+            8 => 'discount',
+            9 => 'po_number',
+            10 => 'date',
+            11 => 'due_date',
+            12 => 'terms',
+            13 => 'public_notes',
+            14 => 'private_notes',
+            15 => 'uses_inclusive_taxes',
+            16 => 'tax_name1',
+            17 => 'tax_rate1',
+            18 => 'tax_name2',
+            19 => 'tax_rate2',
+            20 => 'tax_name3',
+            21 => 'tax_rate3',
+            22 => 'is_amount_discount',
+            23 => 'footer',
+            24 => 'partial',
+            25 => 'partial_due_date',
+            26 => 'custom_value1',
+            27 => 'custom_value2',
+            28 => 'custom_value3',
+            29 => 'custom_value4',
+            30 => 'custom_surcharge1',
+            31 => 'custom_surcharge2',
+            32 => 'custom_surcharge3',
+            33 => 'custom_surcharge4',
+            34 => 'exchange_rate',
+            35 => 'line_items',
+        ]\InvoiceMap;
 use Illuminate\Http\Request;
-use League\Csv\Reader;
-use League\Csv\Statement;
 use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Str;
+use League\Csv\Reader;
+use League\Csv\Statement;
 
 class ImportController extends Controller
 {
@@ -82,6 +127,7 @@ class ImportController extends Controller
 
         $data['data'] = [
             'hash' => $hash,
+            'available' => InvoiceMap::importable(),
             'headers' => array_slice($csv_array, 0, 2)
         ];
 
diff --git a/app/Import/Definitions/InvoiceMap.php b/app/Import/Definitions/InvoiceMap.php
new file mode 100644
index 000000000000..a6780f86046a
--- /dev/null
+++ b/app/Import/Definitions/InvoiceMap.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace App\Import\Definitions
+
+class InvoiceMap
+{
+
+	public static function importable()
+	{
+		return [
+			0 => 'number',
+			1 => 'user_id',
+			2 => 'amount',
+			3 => 'balance',
+			4 => 'client_id',
+			5 => 'status_id',
+			6 => 'is_deleted',
+			7 => 'number',
+			8 => 'discount',
+			9 => 'po_number',
+			10 => 'date',
+			11 => 'due_date',
+			12 => 'terms',
+			13 => 'public_notes',
+			14 => 'private_notes',
+			15 => 'uses_inclusive_taxes',
+			16 => 'tax_name1',
+			17 => 'tax_rate1',
+			18 => 'tax_name2',
+			19 => 'tax_rate2',
+			20 => 'tax_name3',
+			21 => 'tax_rate3',
+			22 => 'is_amount_discount',
+			23 => 'footer',
+			24 => 'partial',
+			25 => 'partial_due_date',
+			26 => 'custom_value1',
+			27 => 'custom_value2',
+			28 => 'custom_value3',
+			29 => 'custom_value4',
+			30 => 'custom_surcharge1',
+			31 => 'custom_surcharge2',
+			32 => 'custom_surcharge3',
+			33 => 'custom_surcharge4',
+			34 => 'exchange_rate',
+			35 => 'line_items',
+		];
+	}
+}
\ No newline at end of file