diff --git a/packages/Webkul/Admin/src/Http/Controllers/Customer/CustomerGroupController.php b/packages/Webkul/Admin/src/Http/Controllers/Customer/CustomerGroupController.php
index 68c9ac975..c1bff5291 100644
--- a/packages/Webkul/Admin/src/Http/Controllers/Customer/CustomerGroupController.php
+++ b/packages/Webkul/Admin/src/Http/Controllers/Customer/CustomerGroupController.php
@@ -123,7 +123,7 @@ class CustomerGroupController extends Controller
     {
         $group = $this->customerGroup->findOneWhere(['id'=>$id]);
 
-        if($group->is_user_defined == 1) {
+        if(!$group->is_user_defined) {
             session()->flash('error', 'This Customer Group can not be deleted');
         } else {
             $this->customerGroup->delete($id);
diff --git a/packages/Webkul/Checkout/src/Http/Requests/CustomerAddressForm.php b/packages/Webkul/Checkout/src/Http/Requests/CustomerAddressForm.php
index 0988a254b..a77e10d66 100644
--- a/packages/Webkul/Checkout/src/Http/Requests/CustomerAddressForm.php
+++ b/packages/Webkul/Checkout/src/Http/Requests/CustomerAddressForm.php
@@ -38,7 +38,7 @@ class CustomerAddressForm extends FormRequest
             'billing.country' => ['required']
         ];
 
-        if(!$this->get('billing')['use_for_shipping']) {
+        if(isset($this->get('billing')['use_for_shipping']) && !$this->get('billing')['use_for_shipping']) {
             $this->rules = array_merge($this->rules, [
                 'shipping.first_name' => ['required'],
                 'shipping.last_name' => ['required'],
diff --git a/packages/Webkul/Sales/src/Repositories/InvoiceRepository.php b/packages/Webkul/Sales/src/Repositories/InvoiceRepository.php
index b7b023aa6..139a44c84 100644
--- a/packages/Webkul/Sales/src/Repositories/InvoiceRepository.php
+++ b/packages/Webkul/Sales/src/Repositories/InvoiceRepository.php
@@ -111,6 +111,7 @@ class InvoiceRepository extends Repository
                 $invoiceItem = $this->invoiceItem->create([
                         'invoice_id' => $invoice->id,
                         'order_item_id' => $orderItem->id,
+                        'state' => 'paid',
                         'name' => $orderItem->name,
                         'sku' => $orderItem->sku,
                         'qty' => $qty,