Ttdfjt

I've been trying to create an order programatically in Magento 2.3 and the order is created but my code dies and I get the error : "Unique constraint violation found".

What do I need to add or change? Here is my code (I´ll remove objectmanager when it´s working):

 $store=$this->_storeManager->getStore();

 $objectManager = MagentoFrameworkAppObjectManager::getInstance();
 $cartManagementInterface = $objectManager->get('MagentoQuoteApiCartManagementInterface');
 $cartRepositoryInterface = $objectManager->get('MagentoQuoteApiCartRepositoryInterface');

 $cart_id = $cartManagementInterface->createEmptyCart();
 $quote = $cartRepositoryInterface->get($cart_id);

 //$quote=$this->quote->create(); //Create object of quote
 $quote->setStore($store); //set store for which you create quote
 // if you have allready buyer id then you can load customer directly
 $customer= $this->customerRepository->get($orderData["email"]);
 $quote->setCurrency();
 $quote->assignCustomer($customer); //Assign quote to customer

 //add items in quote
 $this->productHelper->setSkipSaleableCheck(true);
 foreach($orderData['items'] as $item)
 
 $product=$this->_product->create()->load($item['product_id']);
 $quote->addProduct(
 $product,
 intval($item['qty'])
 );
 
 $this->productHelper->setSkipSaleableCheck(false);

 //Set Address to quote
 $quote->getBillingAddress()->addData($orderData['shipping_address']);

 $quote->getShippingAddress()->addData($orderData['shipping_address']);

 $this->shippingRate
 ->setCode('freeshipping_freeshipping')
 ->getPrice(1);

 // Collect Rates and Set Shipping & Payment Method

 $shippingAddress=$quote->getShippingAddress();
 $shippingAddress->setCollectShippingRates(true)
 ->collectShippingRates()
 ->setShippingMethod('freeshipping_freeshipping'); //shipping method

 $quote->getShippingAddress()->addShippingRate($this->shippingRate);

 $quote->setPaymentMethod('cashondelivery'); //payment method
 $quote->setInventoryProcessed(true); //not effetc inventory
 $quote->save(); //Now Save quote and your quote is ready

 // Set Sales Order Payment
 $quote->getPayment()->importData(['method' => 'cashondelivery']);

 // Collect Totals & Save Quote
 $quote->collectTotals()->save();

 // Create Order From Quote

 $cartManagementInterface = $objectManager->get('MagentoQuoteApiCartManagementInterface');

 $order = $cartManagementInterface->placeOrder($quote->getId());

 //give a result back
 if($order->getEntityId())
 $result['order_id'] = $order->getEntityId();
 else
 $result=['error'=>1,'msg'=>'Your custom message'];
 

 return $result;

I encountered the exact same problem. It was down to the syntax used of certain parts of the process.

Take a look at this.

https://github.com/DominicWatts/Faker/blob/master/Helper/Order.php#L60-L143

 public function createOrder($storeId = 1)
 
 // bypass Area code not set
 $this->_objectManager = MagentoFrameworkAppObjectManager::getInstance();
 $this->cartManagementInterface = $this->_objectManager->create(CartManagementInterface::class);
 try 
 $store = $this->storeManagerInterface->getStore($storeId);
 catch (Exception $e) 
 $this->logger->critical($e);
 return;
 
 $websiteId = $store->getWebsiteId();
 $customerIds = $this->getRandomCustomerId($websiteId);
 if (empty($customerIds)) 
 new Exception(__('Please add some customers for this store first'));
 
 $customer = $this->getCustomerById($customerIds[0]);
 if (!$customer) 
 new Exception(__('Problem loading customer'));
 
 $cartId = $this->cartManagementInterface->createEmptyCart(); //Create empty cart
 $quote = $this->cartRepositoryInterface->get($cartId); // load empty cart quote
 $quote->setStore($store);
 $quote->setCurrency();
 $quote->assignCustomer($customer);
 $productIds = $this->getRandomProductId(rand(1, 10));
 if (empty($productIds)) 
 new Exception(__('Please add some produts for this store first'));
 
 foreach ($productIds as $productId) 
 $product = $this->getProductById($productId);
 $product->setStore($store);
 $product->setPrice($this->faker->randomFloat(4, 0, 100));
 $quote->addProduct($product, (int) (rand(1, 2)));
 
 $billingAddress = $this->addressFactory->create()->load($customer->getDefaultBilling());
 $shippingAddress = $this->addressFactory->create()->load($customer->getDefaultShipping());
 $quote->getBillingAddress()->addData($billingAddress->getData());
 $quote->getShippingAddress()->addData($shippingAddress->getData());
 $shippingAddress = $quote->getShippingAddress();
 $shippingAddress->setCollectShippingRates(true)
 ->collectShippingRates()
 ->setShippingMethod('flatrate_flatrate');
 $quote->setPaymentMethod('checkmo');
 $quote->setInventoryProcessed(false);
 $quote->getPayment()->importData(['method' => 'checkmo']);
 try 
 $this->cartRepositoryInterface->save($quote);
 catch (Exception $e) 
 $this->logger->critical($e);
 return;
 
 $quote->collectTotals();
 $quote = $this->cartRepositoryInterface->get($quote->getId());
 try 
 $orderId = $this->cartManagementInterface->placeOrder($quote->getId());
 $this->generateInvoice($orderId);
 if ($this->getRandomTrueOrFalse()) 
 $this->generateShipment($orderId);
 
 return $orderId;
 catch (Exception $e) 
 $this->logger->critical($e);
 
 

Very similar to your approach so maybe we followed the same guidelines. There is some extra stuff in with regards to loading customer and generating shipment. Also I used object manager to bypass error as this is used within console script. You don't need those parts. But hopefully you can follow what I did.