Oracle iReceivables is a self service application for your receivable management. Using this application you can manage your receivables effectively. Your employees can
use this application to quickly view the invoices, print invoices, take credit card payments or they can apply open credits to invoices. IReceivables enables you to specify service charges for taking credit card payments. This uses BPA (Bill presentment Architecture) for invoice views and the invoice looks like a paper invoice. To generate similar invoice view from AR requires a lot of development effort.
This is the implementation / Training Document on Oracle iReceivables.