ACP2E-3233: Admin can still place order even without payment method

Author: Chhandak.Barua

app/code/Magento/Sales/Controller/Adminhtml/Order/Create/Save.php

@@ -45,6 +45,10 @@ public function execute()
                 $this->_getOrderCreateModel()->setPaymentData($paymentData);
                 $this->_getOrderCreateModel()->getQuote()->getPayment()->addData($paymentData);
             }
+            else {
+                $paymentData = array('method' => '');
+                $this->_getOrderCreateModel()->getQuote()->getPayment()->addData($paymentData);
+            }
 
             $order = $this->_getOrderCreateModel()
                 ->setIsValidate(true)