Different Identity Domain - OAuth 2.0 Resource Owner Password (no identity propagation)

Summary:

Hello everyone,

I am currently working with a scenario where I am using OAuth 2.0 Resource Owner Password Flow (without identity propagation) for authentication. This setup is in place because the OPA and VB are in different OCI Identity domains and are not within the same IDCS stripe.

The challenge I am facing is that, while a user is logging into Fusion, I need to fetch the tasks associated with the logged-in user from Fusion. Since VB extension is embedded within the Fusion application, I am looking for the correct approach to solve this issue.

Could anyone provide guidance on how to achieve this in the context of the cross-domain authentication? Specifically, I need a way to fetch the logged-in user's tasks from Fusion while maintaining the necessary security and authentication flow.