Which API can be used to fetch Open Notifications (User/Approval Tasks) in Oracle BPM?

Hi Experts,

I am working on Oracle BPM and need to retrieve open notifications/tasks for a specific user, particularly for approval-type tasks.

Requirement:

• Fetch all open BPM tasks/notifications
• Filter by specific user
• Include approval-type tasks
• Ideally accessible via a REST or SOAP API for integration purposes

Questions:

1. Which Oracle BPM API should be used to retrieve open user tasks or approval notifications?
2. Is there a specific REST endpoint available for this in BPM Workspace?
3. How can we filter tasks by:
   • Assigned user
   • Task state (e.g., Assigned, Pending, Open)
   • Task type (Approval)