QuickBooks Online 2021. Now, invoices created from a check, which was created from a purchase order the purchase order for the request of inventory. Let’s get into it with Intuit QuickBooks Online 2021. Here we are in our get great guitars practice file, we’re going to make an invoice but it’s a little bit different than what we’ve seen before. In essence, we’re going to be linking the invoice all the way back to the purchase order. So we’re imagining a situation where we have a customer that customer came in that being Eric music, they requested 50 guitars 50 Epiphone, Les Paul type of guitars, we said we don’t have those on hand, but we will order them for you.