You will continue to prepare your invoices and send them to your customer per usual.  We would request that you “CC” (carbon copy) us when you email the invoice(s) to your customer for any invoice you would like to factor. This allows us to know that your customer has received the invoice.  It also ensures we know who to contact for payment if the invoice becomes past due.  In addition, we would need a copy of any additional paperwork needed to ensure payment such as a purchase order, work order, time sheets, etc.