Invoking Generative AI Agent from ODA

Summary:

Trying to invoke Generative AI Agent end point from Oracle Digital Assistant as a REST service.

Content (please ensure you mask any confidential information):

I've added the Gen AI Agent end point as a REST service and when I click on the Test Request button, it displays an error:

As I have specified the Authentication Type as OCI Resource Principal, is there any additional configuration required? I've already specified that access to Gen AI agent should be granted for the ODA's OCID. Is there something else that I'm missing?

Any inputs would be much appreciated!

Version (include the version you are using, if applicable):