Draft, pending, rejected, and deleted rejected items do not display as expected on pages that are cached at the system level. To avoid access problems, do not cache pages (or templates) at the system level when Approvals and Notifications are enabled. See Section 21.1, "Page Caching".
Before you can select Oracle BPEL as an option for approvals, you need to enable the Content Management Event Framework (CMEF). Oracle BPEL uses CMEF to communicate with Oracle Portal. See Section 5.4.1, "Enabling Oracle BPEL Approval Processes."
Before you can use an Oracle BPEL workflow process, the portal administrator must first create a process definition for it. For information about how to do this, see the Oracle Fusion Middleware Administrator's Guide for Oracle Portal.