V2/token Endpoint failing

Products

• CA API Gateway

Issue/Introduction

We are trying to make a call to the /auth/oauth/v2/token endpoint inside a gateway policy but there is no response. The call works fine from Postman and other client applications.

Environment

API Gateway 10.0

Cause

The call is failing on the gateway because there is no request body being passed to the /auth/oauth/v2/token endpoint (the policy fails on the Validate HTML Form Data assertion).

Resolution

The overall goal is to generate an access token within a policy. This can be done with a Set Context Variable assertion and Route via HTTP(S) assertion. See the attached sample policy.