Online vs Enterprise desktop

You can use a 3rd party inventory management app with the sales order feature to integrate with QBO. Do you run a retail/wholesale or manufacturing company? Otherwise, host your QB Desktop Enterprise and you can access it via internet. You can purchase it thru select partners and get a perpetual discount on renewals.

Welcome to the Community, @avd92. Let me share some details about the transactions you want to use in QuickBooks Online (QBO).

The Sales Order and the Receive Items transactions aren't available in QBO. On the other hand, you can enter an invoice and bills.

Here's how to enter an invoice:

1. Go to the +New icon.
2. Under CUSTOMER.
3. Click Invoice.

Here's how to enter a bill:

1. Go to the +New icon.
2. In the VENDOR column.
3. Click Bill.

Furthermore, the inventory quantity will automatically be added after creating a Bill for your Purchase orders.

As for the third-party applications, we can't directly recommend you one. You can go to this article: QuickBooks App Store. Then, type keywords for the things you need, like sales orders.

Additionally, you can refer to this article to personalize your sales forms: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Return to this thread if you need further assistance with your sales forms. We're available 24/7 to provide you with the help you need.