Basically … orders that you don’t get paid for right away.
Pay by Invoice …FAQs
When will I receive my payment for Pay by Invoice orders?
Amazon will credit the available balance of sellers’ Selling on Amazon account when payment for the Invoice is received from the customer. This may occur around the due date or even before due date.
However, in case of late payments, Amazon will assume the risk and credit the available balance of the sellers’ Selling on Amazon account on the 7th day past the due date if the customer has not paid by that time.
If you wish to be paid early for invoiced orders you may change your invoiced order payment settings and your payment will be credited to the available balance of your Selling on Amazon account immediately after shipment by paying a 1.5% processing charge. The payment for invoiced orders is guaranteed even when a buyer is late or defaults on payment. This new invoiced order payment process will be launched after June 30, 2018, although it may take longer to receive your first invoiced order due to the limited number of Amazon Business buyers qualified for Pay by Invoice.