diff --git a/app/Http/Controllers/Common/Items.php b/app/Http/Controllers/Common/Items.php
index d38c43efd..144f31019 100644
--- a/app/Http/Controllers/Common/Items.php
+++ b/app/Http/Controllers/Common/Items.php
@@ -9,6 +9,7 @@ use App\Models\Setting\Category;
 use App\Models\Setting\Currency;
 use App\Models\Setting\Tax;
 use App\Traits\Uploads;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 
 class Items extends Controller
@@ -106,20 +107,9 @@ class Items extends Controller
      */
     public function import(ImportFile $import)
     {
-        // Loop through all sheets
-        $import->each(function ($sheet) {
-            if ($sheet->getTitle() != 'items') {
-                return;
-            }
-
-            // Loop through all rows
-            $sheet->each(function ($row) {
-                $data = $row->toArray();
-                $data['company_id'] = session('company_id');
-
-                Item::create($data);
-            });
-        });
+        if (!Import::createFromFile($import, 'Common\Item')) {
+            return redirect('common/import/common/items');
+        }
 
         $message = trans('messages.success.imported', ['type' => trans_choice('general.items', 2)]);
 
diff --git a/app/Http/Controllers/Expenses/Bills.php b/app/Http/Controllers/Expenses/Bills.php
index 0e3c2d452..fab91f2af 100644
--- a/app/Http/Controllers/Expenses/Bills.php
+++ b/app/Http/Controllers/Expenses/Bills.php
@@ -24,6 +24,7 @@ use App\Models\Common\Media;
 use App\Traits\Currencies;
 use App\Traits\DateTime;
 use App\Traits\Uploads;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 use App\Utilities\Modules;
 use Date;
@@ -291,45 +292,23 @@ class Bills extends Controller
      */
     public function import(ImportFile $import)
     {
+        $success = true;
+
         // Loop through all sheets
-        $import->each(function ($sheet) {
-            $class = '\App\Models\Expense\\' . str_singular(studly_case($sheet->getTitle()));
+        $import->each(function ($sheet) use (&$success) {
+            $slug = 'Expense\\' . str_singular(studly_case($sheet->getTitle()));
 
-            if (!class_exists($class)) {
-                return;
+            $success = Import::createFromSheet($sheet, $slug);
+
+            if (!$success) {
+                return false;
             }
-
-            $sheet->each(function ($row) use ($sheet, $class) {
-                $data = $row->toArray();
-                $data['company_id'] = session('company_id');
-
-                switch ($sheet->getTitle()) {
-                    case 'bills':
-                        if (empty($data['vendor_email'])) {
-                            $data['vendor_email'] = '';
-                        }
-                        break;
-                    case 'bill_items':
-                        if (empty($data['tax_id'])) {
-                            $data['tax_id'] = '0';
-                        }
-                        break;
-                    case 'bill_histories':
-                        if (empty($data['notify'])) {
-                            $data['notify'] = '0';
-                        }
-                        break;
-                    case 'bill_totals':
-                        if (empty($data['amount'])) {
-                            $data['amount'] = '0';
-                        }
-                        break;
-                }
-
-                $class::create($data);
-            });
         });
 
+        if (!$success) {
+            return redirect('common/import/expenses/bills');
+        }
+
         $message = trans('messages.success.imported', ['type' => trans_choice('general.bills', 2)]);
 
         flash($message)->success();
diff --git a/app/Http/Controllers/Expenses/Payments.php b/app/Http/Controllers/Expenses/Payments.php
index 4e64ed7c3..028de238c 100644
--- a/app/Http/Controllers/Expenses/Payments.php
+++ b/app/Http/Controllers/Expenses/Payments.php
@@ -10,6 +10,7 @@ use App\Models\Expense\Vendor;
 use App\Models\Setting\Category;
 use App\Models\Setting\Currency;
 use App\Traits\Uploads;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 use App\Utilities\Modules;
 
@@ -133,20 +134,9 @@ class Payments extends Controller
      */
     public function import(ImportFile $import)
     {
-        // Loop through all sheets
-        $import->each(function ($sheet) {
-            if ($sheet->getTitle() != 'payments') {
-                return;
-            }
-
-            // Loop through all rows
-            $sheet->each(function ($row) {
-                $data = $row->toArray();
-                $data['company_id'] = session('company_id');
-
-                Payment::create($data);
-            });
-        });
+        if (!Import::createFromFile($import, 'Expense\Payment')) {
+            return redirect('common/import/expenses/payments');
+        }
 
         $message = trans('messages.success.imported', ['type' => trans_choice('general.payments', 2)]);
 
diff --git a/app/Http/Controllers/Expenses/Vendors.php b/app/Http/Controllers/Expenses/Vendors.php
index e8ccb3162..142b68720 100644
--- a/app/Http/Controllers/Expenses/Vendors.php
+++ b/app/Http/Controllers/Expenses/Vendors.php
@@ -9,6 +9,7 @@ use App\Models\Expense\Payment;
 use App\Models\Expense\Vendor;
 use App\Models\Setting\Currency;
 use App\Traits\Uploads;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 use Date;
 use Illuminate\Pagination\Paginator;
@@ -124,10 +125,6 @@ class Vendors extends Controller
      */
     public function store(Request $request)
     {
-        if (empty($request['email'])) {
-            $request['email'] = '';
-        }
-
         $vendor = Vendor::create($request->all());
 
         // Upload logo
@@ -171,25 +168,9 @@ class Vendors extends Controller
      */
     public function import(ImportFile $import)
     {
-        // Loop through all sheets
-        $import->each(function ($sheet) {
-            if ($sheet->getTitle() != 'vendors') {
-                return;
-            }
-
-            // Loop through all rows
-            $sheet->each(function ($row) {
-                $data = $row->toArray();
-
-                if (empty($data['email'])) {
-                    $data['email'] = '';
-                }
-
-                $data['company_id'] = session('company_id');
-
-                Vendor::create($data);
-            });
-        });
+        if (!Import::createFromFile($import, 'Expense\Vendor')) {
+            return redirect('common/import/expenses/vendors');
+        }
 
         $message = trans('messages.success.imported', ['type' => trans_choice('general.vendors', 2)]);
 
@@ -222,10 +203,6 @@ class Vendors extends Controller
      */
     public function update(Vendor $vendor, Request $request)
     {
-        if (empty($request['email'])) {
-            $request['email'] = '';
-        }
-
         $vendor->update($request->all());
 
         // Upload logo
@@ -336,10 +313,6 @@ class Vendors extends Controller
 
     public function vendor(Request $request)
     {
-        if (empty($request['email'])) {
-            $request['email'] = '';
-        }
-
         $vendor = Vendor::create($request->all());
 
         return response()->json($vendor);
diff --git a/app/Http/Controllers/Incomes/Customers.php b/app/Http/Controllers/Incomes/Customers.php
index 3b72eb5f4..699ea5603 100644
--- a/app/Http/Controllers/Incomes/Customers.php
+++ b/app/Http/Controllers/Incomes/Customers.php
@@ -9,6 +9,7 @@ use App\Models\Income\Customer;
 use App\Models\Income\Invoice;
 use App\Models\Income\Revenue;
 use App\Models\Setting\Currency;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 use Date;
 use Illuminate\Http\Request as FRequest;
@@ -125,10 +126,6 @@ class Customers extends Controller
     public function store(Request $request)
     {
         if (empty($request->input('create_user'))) {
-            if (empty($request['email'])) {
-                $request['email'] = '';
-            }
-
             Customer::create($request->all());
         } else {
             // Check if user exist
@@ -191,25 +188,9 @@ class Customers extends Controller
      */
     public function import(ImportFile $import)
     {
-        // Loop through all sheets
-        $import->each(function ($sheet) {
-            if ($sheet->getTitle() != 'customers') {
-                return;
-            }
-
-            // Loop through all rows
-            $sheet->each(function ($row) {
-                $data = $row->toArray();
-
-                if (empty($data['email'])) {
-                    $data['email'] = '';
-                }
-
-                $data['company_id'] = session('company_id');
-
-                Customer::create($data);
-            });
-        });
+        if (!Import::createFromFile($import, 'Income\Customer')) {
+            return redirect('common/import/incomes/customers');
+        }
 
         $message = trans('messages.success.imported', ['type' => trans_choice('general.customers', 2)]);
 
@@ -243,10 +224,6 @@ class Customers extends Controller
     public function update(Customer $customer, Request $request)
     {
         if (empty($request->input('create_user'))) {
-            if (empty($request['email'])) {
-                $request['email'] = '';
-            }
-
             $customer->update($request->all());
         } else {
             // Check if user exist
@@ -372,10 +349,6 @@ class Customers extends Controller
 
     public function customer(Request $request)
     {
-        if (empty($request['email'])) {
-            $request['email'] = '';
-        }
-
         $customer = Customer::create($request->all());
 
         return response()->json($customer);
diff --git a/app/Http/Controllers/Incomes/Invoices.php b/app/Http/Controllers/Incomes/Invoices.php
index 5e96cd0cf..d8c5f995b 100644
--- a/app/Http/Controllers/Incomes/Invoices.php
+++ b/app/Http/Controllers/Incomes/Invoices.php
@@ -27,6 +27,7 @@ use App\Traits\Currencies;
 use App\Traits\DateTime;
 use App\Traits\Incomes;
 use App\Traits\Uploads;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 use App\Utilities\Modules;
 use Date;
@@ -312,45 +313,23 @@ class Invoices extends Controller
      */
     public function import(ImportFile $import)
     {
+        $success = true;
+
         // Loop through all sheets
-        $import->each(function ($sheet) {
-            $class = '\App\Models\Income\\' . str_singular(studly_case($sheet->getTitle()));
+        $import->each(function ($sheet) use (&$success) {
+            $slug = 'Income\\' . str_singular(studly_case($sheet->getTitle()));
 
-            if (!class_exists($class)) {
-                return;
+            $success = Import::createFromSheet($sheet, $slug);
+
+            if (!$success) {
+                return false;
             }
-
-            $sheet->each(function ($row) use ($sheet, $class) {
-                $data = $row->toArray();
-                $data['company_id'] = session('company_id');
-
-                switch ($sheet->getTitle()) {
-                    case 'invoices':
-                        if (empty($data['customer_email'])) {
-                            $data['customer_email'] = '';
-                        }
-                        break;
-                    case 'invoice_items':
-                        if (empty($data['tax_id'])) {
-                            $data['tax_id'] = '0';
-                        }
-                        break;
-                    case 'invoice_histories':
-                        if (empty($data['notify'])) {
-                            $data['notify'] = '0';
-                        }
-                        break;
-                    case 'invoice_totals':
-                        if (empty($data['amount'])) {
-                            $data['amount'] = '0';
-                        }
-                        break;
-                }
-
-                $class::create($data);
-            });
         });
 
+        if (!$success) {
+            return redirect('common/import/incomes/invoices');
+        }
+
         $message = trans('messages.success.imported', ['type' => trans_choice('general.invoices', 2)]);
 
         flash($message)->success();
diff --git a/app/Http/Controllers/Incomes/Revenues.php b/app/Http/Controllers/Incomes/Revenues.php
index 093ac327e..7526ec4f4 100644
--- a/app/Http/Controllers/Incomes/Revenues.php
+++ b/app/Http/Controllers/Incomes/Revenues.php
@@ -12,6 +12,7 @@ use App\Models\Setting\Currency;
 use App\Traits\Currencies;
 use App\Traits\DateTime;
 use App\Traits\Uploads;
+use App\Utilities\Import;
 use App\Utilities\ImportFile;
 use App\Utilities\Modules;
 
@@ -135,20 +136,9 @@ class Revenues extends Controller
      */
     public function import(ImportFile $import)
     {
-        // Loop through all sheets
-        $import->each(function ($sheet) {
-            if ($sheet->getTitle() != 'revenues') {
-                return;
-            }
-
-            // Loop through all rows
-            $sheet->each(function ($row) {
-                $data = $row->toArray();
-                $data['company_id'] = session('company_id');
-
-                Revenue::create($data);
-            });
-        });
+        if (!Import::createFromFile($import, 'Income\Revenue')) {
+            return redirect('common/import/incomes/revenues');
+        }
 
         $message = trans('messages.success.imported', ['type' => trans_choice('general.revenues', 2)]);
 
diff --git a/app/Http/Requests/Expense/Bill.php b/app/Http/Requests/Expense/Bill.php
index 8bd84e01c..75484218e 100644
--- a/app/Http/Requests/Expense/Bill.php
+++ b/app/Http/Requests/Expense/Bill.php
@@ -34,11 +34,15 @@ class Bill extends Request
         $company_id = $this->request->get('company_id');
 
         return [
-            'vendor_id' => 'required|integer',
             'bill_number' => 'required|string|unique:bills,NULL,' . $id . ',id,company_id,' . $company_id . ',deleted_at,NULL',
+            'bill_status_code' => 'required|string',
             'billed_at' => 'required|date',
             'due_at' => 'required|date',
+            'amount' => 'required',
             'currency_code' => 'required|string',
+            'currency_rate' => 'required',
+            'vendor_id' => 'required|integer',
+            'vendor_name' => 'required|string',
             'category_id' => 'required|integer',
             'attachment' => 'mimes:' . setting('general.file_types') . '|between:0,' . setting('general.file_size') * 1024,
         ];
diff --git a/app/Http/Requests/Expense/BillHistory.php b/app/Http/Requests/Expense/BillHistory.php
new file mode 100644
index 000000000..6c58f3d22
--- /dev/null
+++ b/app/Http/Requests/Expense/BillHistory.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Http\Requests\Expense;
+
+use App\Http\Requests\Request;
+
+class BillHistory extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'bill_id' => 'required|integer',
+            'status_code' => 'required|string',
+            'notify' => 'required|integer',
+        ];
+    }
+}
diff --git a/app/Http/Requests/Expense/BillItem.php b/app/Http/Requests/Expense/BillItem.php
new file mode 100644
index 000000000..316b3b7e0
--- /dev/null
+++ b/app/Http/Requests/Expense/BillItem.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Requests\Expense;
+
+use App\Http\Requests\Request;
+
+class BillItem extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'bill_id' => 'required|integer',
+            'name' => 'required|string',
+            'quantity' => 'required|integer',
+            'price' => 'required',
+            'price' => 'required',
+            'total' => 'required',
+            'tax' => 'required',
+            'tax_id' => 'required',
+        ];
+    }
+}
diff --git a/app/Http/Requests/Expense/BillTotal.php b/app/Http/Requests/Expense/BillTotal.php
new file mode 100644
index 000000000..f303ef3f9
--- /dev/null
+++ b/app/Http/Requests/Expense/BillTotal.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Requests\Expense;
+
+use App\Http\Requests\Request;
+
+class BillTotal extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'bill_id' => 'required|integer',
+            'name' => 'required|string',
+            'amount' => 'required',
+            'sort_order' => 'required|integer',
+        ];
+    }
+}
diff --git a/app/Http/Requests/Income/Invoice.php b/app/Http/Requests/Income/Invoice.php
index ed35db28c..ee25a3927 100644
--- a/app/Http/Requests/Income/Invoice.php
+++ b/app/Http/Requests/Income/Invoice.php
@@ -34,11 +34,15 @@ class Invoice extends Request
         $company_id = $this->request->get('company_id');
 
         return [
-            'customer_id' => 'required|integer',
             'invoice_number' => 'required|string|unique:invoices,NULL,' . $id . ',id,company_id,' . $company_id . ',deleted_at,NULL',
+            'invoice_status_code' => 'required|string',
             'invoiced_at' => 'required|date',
             'due_at' => 'required|date',
+            'amount' => 'required',
             'currency_code' => 'required|string',
+            'currency_rate' => 'required',
+            'customer_id' => 'required|integer',
+            'customer_name' => 'required|string',
             'category_id' => 'required|integer',
             'attachment' => 'mimes:' . setting('general.file_types') . '|between:0,' . setting('general.file_size') * 1024,
         ];
diff --git a/app/Http/Requests/Income/InvoiceHistory.php b/app/Http/Requests/Income/InvoiceHistory.php
new file mode 100644
index 000000000..638105518
--- /dev/null
+++ b/app/Http/Requests/Income/InvoiceHistory.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Http\Requests\Income;
+
+use App\Http\Requests\Request;
+
+class InvoiceHistory extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'invoice_id' => 'required|integer',
+            'status_code' => 'required|string',
+            'notify' => 'required|integer',
+        ];
+    }
+}
diff --git a/app/Http/Requests/Income/InvoiceItem.php b/app/Http/Requests/Income/InvoiceItem.php
new file mode 100644
index 000000000..87f3e7661
--- /dev/null
+++ b/app/Http/Requests/Income/InvoiceItem.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Requests\Income;
+
+use App\Http\Requests\Request;
+
+class InvoiceItem extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'invoice_id' => 'required|integer',
+            'name' => 'required|string',
+            'quantity' => 'required|integer',
+            'price' => 'required',
+            'price' => 'required',
+            'total' => 'required',
+            'tax' => 'required',
+            'tax_id' => 'required',
+        ];
+    }
+}
diff --git a/app/Http/Requests/Income/InvoiceTotal.php b/app/Http/Requests/Income/InvoiceTotal.php
new file mode 100644
index 000000000..9bdf603d6
--- /dev/null
+++ b/app/Http/Requests/Income/InvoiceTotal.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Requests\Income;
+
+use App\Http\Requests\Request;
+
+class InvoiceTotal extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'invoice_id' => 'required|integer',
+            'name' => 'required|string',
+            'amount' => 'required',
+            'sort_order' => 'required|integer',
+        ];
+    }
+}
diff --git a/app/Listeners/Updates/Version128.php b/app/Listeners/Updates/Version128.php
new file mode 100644
index 000000000..590c8f73c
--- /dev/null
+++ b/app/Listeners/Updates/Version128.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Listeners\Updates;
+
+use App\Events\UpdateFinished;
+use Artisan;
+
+class Version128 extends Listener
+{
+    const ALIAS = 'core';
+
+    const VERSION = '1.2.0';
+
+    /**
+     * Handle the event.
+     *
+     * @param  $event
+     * @return void
+     */
+    public function handle(UpdateFinished $event)
+    {
+        // Check if should listen
+        if (!$this->check($event)) {
+            return;
+        }
+
+        // Update database
+        Artisan::call('migrate', ['--force' => true]);
+    }
+}
diff --git a/app/Providers/EventServiceProvider.php b/app/Providers/EventServiceProvider.php
index 23962f7db..2ef72f7b5 100644
--- a/app/Providers/EventServiceProvider.php
+++ b/app/Providers/EventServiceProvider.php
@@ -25,6 +25,7 @@ class EventServiceProvider extends ServiceProvider
             'App\Listeners\Updates\Version120',
             'App\Listeners\Updates\Version126',
             'App\Listeners\Updates\Version127',
+            'App\Listeners\Updates\Version128',
         ],
         'Illuminate\Auth\Events\Login' => [
             'App\Listeners\Auth\Login',
diff --git a/app/Utilities/Import.php b/app/Utilities/Import.php
new file mode 100644
index 000000000..1c035f72d
--- /dev/null
+++ b/app/Utilities/Import.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace App\Utilities;
+
+use Illuminate\Validation\ValidationException;
+
+class Import
+{
+
+    public static function createFromFile($import, $slug)
+    {
+        $success = true;
+
+        // Loop through all sheets
+        $import->each(function ($sheet) use (&$success, $slug) {
+            $model = '\App\Models\\' . $slug;
+            $request = '\App\Http\Requests\\' . $slug;
+
+            if (!class_exists($model) || !class_exists($request)) {
+                return false;
+            }
+
+            $tmp = explode('\\', $slug);
+            $file_name = str_plural(strtolower($tmp[1]));
+
+            if ($sheet->getTitle() != $file_name) {
+                return false;
+            }
+
+            $success = static::createFromSheet($sheet, $slug);
+        });
+
+        return $success;
+    }
+
+    public static function createFromSheet($sheet, $slug)
+    {
+        $success = true;
+
+        $model = '\App\Models\\' . $slug;
+        $request = '\App\Http\Requests\\' . $slug;
+
+        if (!class_exists($model) || !class_exists($request)) {
+            return false;
+        }
+
+        // Loop through all rows
+        $sheet->each(function ($row, $index) use ($sheet, &$success, $model, $request) {
+            $data = $row->toArray();
+
+            // Set the line values so that request class could validate
+            request()->merge($data);
+
+            try {
+                app($request);
+
+                $data['company_id'] = session('company_id');
+
+                $model::create($data);
+            } catch (ValidationException $e) {
+                $message = trans('messages.error.import_failed', [
+                    'message' => $e->validator->errors()->first(),
+                    'sheet' => $sheet->getTitle(),
+                    'line' => $index + 2,
+                ]);
+
+                flash($message)->error()->important();
+
+                $success = false;
+
+                // Break the import process
+                return false;
+            }
+
+            // Unset added line values
+            foreach ($data as $key => $value) {
+                request()->offsetUnset($key);
+            }
+        });
+
+        return $success;
+    }
+
+}
\ No newline at end of file
diff --git a/database/migrations/2018_06_23_000000_modify_email_column.php b/database/migrations/2018_06_23_000000_modify_email_column.php
new file mode 100644
index 000000000..7fefdb8c2
--- /dev/null
+++ b/database/migrations/2018_06_23_000000_modify_email_column.php
@@ -0,0 +1,41 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+
+class ModifyEmailColumn extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('customers', function (Blueprint $table) {
+            $table->string('email')->nullable()->change();
+        });
+
+        Schema::table('invoices', function (Blueprint $table) {
+            $table->string('customer_email')->nullable()->change();
+        });
+
+        Schema::table('vendors', function (Blueprint $table) {
+            $table->string('email')->nullable()->change();
+        });
+
+        Schema::table('bills', function (Blueprint $table) {
+            $table->string('vendor_email')->nullable()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+
+    }
+}
diff --git a/public/files/import/bills.xlsx b/public/files/import/bills.xlsx
index 633860665..078074190 100644
Binary files a/public/files/import/bills.xlsx and b/public/files/import/bills.xlsx differ
diff --git a/public/files/import/invoices.xlsx b/public/files/import/invoices.xlsx
index bc8c084de..b6c2f6fb5 100644
Binary files a/public/files/import/invoices.xlsx and b/public/files/import/invoices.xlsx differ
diff --git a/resources/lang/en-GB/messages.php b/resources/lang/en-GB/messages.php
index ce5ea6127..59336a662 100644
--- a/resources/lang/en-GB/messages.php
+++ b/resources/lang/en-GB/messages.php
@@ -18,6 +18,7 @@ return [
         'no_file'           => 'Error: No file selected!',
         'last_category'     => 'Error: Can not delete the last :type category!',
         'invalid_token'     => 'Error: The token entered is invalid!',
+        'import_failed'     => 'Error: :message Sheet name: :sheet. Line number: :line.',
     ],
     'warning' => [
         'deleted'           => 'Warning: You are not allowed to delete <b>:name</b> because it has :text related.',