Account services operations are used to allow invoices with outstanding amounts to be retrieved and paid by either voucher or credit card. From the IP1 perspective these are account receivable transactions. Pre-requisite for all services in this WSDL -is createSession web service for a registered user.
| HTTP method | Service | Description |
| POST | retrieveOutstandingInvoices | retrieves all outstanding invoices for a nominated billing number. |
| POST | selectInvoices | allows to select which of the invoices returned by retrieveOutstandingInvoices to pay. |
| GET | processInvoices | checks payment status of selected invoices. It returns amount due and valid payment methods. |
| GET | prepareAccountPayment | retrieves the details required to make a payment using the payment method selected. |
| POST | payInvoices | allows to pay the selected invoices by sending the detail required for the payment method from prepareAccountPayment. |
| POST | searchInvoice | allows to search for an invoice for the current customer. |
