 First make an invoice that we're going to then reverse with a credit memo. And so let's go back here and we'll do a more complex transaction that has inventory involved in it, because that's going to be just more complex. If you just have a service items, then you can just remove some of the complexity that will be involved with it. So I'm going to hit the dropdown. We'll make an invoice here and say, let's make an invoice. Let's just make a new customer AA and I'm going to say, let's make a new item down below and add inventory to it. And we'll also have sales tax just to really complicate things.