The WSTransaction default policy sets are based on the WS-Transaction specification and provide transactional integrity for Web services. The WSTransaction default policy sets include the WSTransaction policy set and the SSL WSTransaction policy set.
You can use the WSTransaction default policy sets to make your SOAP over HTTP-based Web services interoperable and atomic without writing custom code. Use the WSTransaction policy set or the SSL WSTransaction policy set as provided with the application server. To customize the policy sets, you must first copy the policy set, and then configure custom policy settings and bindings to meet your needs.