API can not route with outbound authentication to any endpoint

Hi
When I create any API and route to any endpoint with an outbound authentication policy, I receive in postman an error:
native service provider error. Code : 500. Request Detail
?
Best Regards

Kindly check Endpoint URI of your routing policy is configured correctly and reachable from your API Gateway.its seem to be API Gateway getting 500 due to not fulfilling expected condition in some way.

share your policy configuration settings.