If you are selling your product to businesses, in certain organisations it can be a requirement for their procurement team to raise a Purchase Order (PO) ahead of payment.
In order for them to do this, you should have the Purchase Order payment method enabled under Vendor Settings > Checkout Settings.
The buyer should be sent to the Paddle Checkout as normal, choosing “Purchase Order” as their payment method during the checkout process. This will issue the buyer a Purchase Order indicating the product, price, and quantity of the purchase. In addition to a “Pay Now” link to settle the Purchase Order. Buyers are delivered their product(s) having settled the payment.