Magento 2 Tutorial: How To Create Invoice Programmatically

Moreover, this module also sends invoice and shipment emails immediately to your customers. It will enhance customer satisfaction.
While most other modules require you to install another third-party PDF invoice extension, Magento 2 Auto Invoice by BSS already has a built-in PDF file to invoice/ shipment email.
MagentoFrameworkAppObjectManager::getInstance()
->create(VendorModuleModelCreateInvoice::class)
->execute(4);

How To Create Magento 2 Invoice Automatically?

Magento 2 Invoice is a record of payment for an order. 

What Is Magento Invoice?

To create the Magento 2 Invoice programmatically, you need to create a new model in your module app/code/Vendor/Module/Model/CreateInvoice.php with the following code:
We hope this blog is helpful and good luck to you!
In this article, we have shown you how to create the Magento 2 invoice programmatically.

How To Create Magento 2 Invoice Programmatically?

Invoices help online merchants in receiving payments more quickly.
Invoice is a crucial element of Magento order processing. Store owners always have to make sure invoices are sent to customers on time to confirm their order information and allow customers to keep track of their purchases.
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• It is very time-consuming to handle every orders’ invoices by hand
• The increasing number of manual tasks will lead to more human errors, which negatively impact customer satisfaction.

This extension helps to automatically generate invoices and shipment right after a customer finishes placing the order, which saves you a lot of time and effort.
And hereby, we want to introduce you to the best invoice extension:
Highlight features:

From the business perspective, the invoice is a document that signifies a sales contract between a store and a customer and contains all of the order details. 

Due to that, we highly recommend you create invoices automatically using a Magento invoice extension to make your business go more smoothly.
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Table of Contents
Usually, the invoice will be created automatically after the payment is authorized if the customer uses a payment method that has been integrated into the Magento 2 system.

• Automatically generate invoice and shipment based on payment methods for orders with a “new” order state
• Automatically send invoice and shipment emails to customer
• Apply automatic invoice and shipment for multiple payment methods

Conclusion

However, if the customer uses a payment method such as check/money order, then the admin must create invoices manually.
Lastly, this extension supports many payment methods (COD, credit card, check/money order, PayPal, etc.)
We also introduce you to the best solution to create the Magento 2 invoice automatically.
<?php namespace [Vendor][Module]Model; use MagentoSalesApiOrderRepositoryInterface;
use MagentoSalesModelServiceInvoiceService;
use MagentoFrameworkDBTransaction;
use MagentoSalesModelOrderEmailSenderInvoiceSender; class CreateInvoice
{
protected $orderRepository;
protected $invoiceService;
protected $transaction;
protected $invoiceSender; public function __construct(
OrderRepositoryInterface $orderRepository,
InvoiceService $invoiceService,
InvoiceSender $invoiceSender,
Transaction $transaction
) {
$this->orderRepository = $orderRepository;
$this->invoiceService = $invoiceService;
$this->transaction = $transaction;
$this->invoiceSender = $invoiceSender;
} public function execute($orderId)
{
$order = $this->orderRepository->get($orderId);

if ($order->canInvoice()) {
$invoice = $this->invoiceService->prepareInvoice($order);
$invoice->register();
$invoice->save();

$transactionSave =
$this->transaction
->addObject($invoice)
->addObject($invoice->getOrder());
$transactionSave->save();
$this->invoiceSender->send($invoice);

$order->addCommentToStatusHistory(
__('Notified customer about invoice creation #%1.', $invoice->getId())
)->setIsCustomerNotified(true)->save();
}
}
}

Magento 2 Auto Invoice by BSS