Billing Structure and Order Changes: Set up mobile RO trailer orders using established billing stages and approved travel fee codes, including per diem rather than actual hotel and car costs, so Accounts Receivable (AR) can bill from an accurate order. Collect shipment, delivery, service completion, labor hours, technician days, per diem, return, and meter-reading records, and deliver them to AR so charges are billed according to required billing triggers and invoices are not held.