> For the complete documentation index, see [llms.txt](https://apidocs.arionbanki.is/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.arionbanki.is/b2b-2013-schema/b2b-services/b2b-unpaid-bills-service/general-information.md).

# General Information

This documentation is intended for technical personnel implementing solutions related to Arion bank’s B2B services. The manual contains use cases, descriptions of functions and format of data.

### About the Service

The Unpaid Bills Service retrieves information on unpaid bills. The service can retrieve unpaid claims, unpaid optional claims and unpaid direct debits. Bills that have been marked hidden in the online banking interface will not be returned. Additionally, detailed information about a specific bill can be retrieved, including accrued interest on a claim and a breakdown of costs (e.g. incurred default cost and discount).

### Identity and Access Management <a href="#toc413067892" id="toc413067892"></a>

Access control for the service follows the same model as the Arion online banking system, where users are authenticated with a username and password. Additionally, communications between the web service and the user’s system are signed with an electronic certificate.

The Unpaid Bills Service is built on Arion bank's own schema. The service has a defined WCF endpoint with a Mutual Authentication security model. Information transmitted between systems is encrypted over HTTPS, ensuring maximum security.&#x20;

For detailed instructions on authentication for B2B services, refer to the manual - [Authentication and Certificates](/b2b-2013-schema/b2b-services/b2b-setting-up-a-authentication-and-certificates.md).

### Web Paths&#x20;

The Unpaid Bills Service is available at the following URL:                <http://ws.b2b.is/Statements/20130201/BillService.svc>​&#x20;

### Schema&#x20;

Schema descriptions, including WSDL files, are available at the following URL: <https://ws.b2b.is/Statements/20130201/BillService.svc?wsdl​>&#x20;