Troubleshooting Guides for Calling APIs

Use these troubleshooting guides to diagnose and resolve issues related to calling APIs.

These API Gateway troubleshooting guides provide in-depth information about specific issues related to calling APIs, including symptoms, possible causes, and likely resolutions:

• Token validation fails because token claims do not match the deployment policy
• Authentication provider call failures surface as HTTP 500
• Unexpected response codes are returned through API Gateway
• API Gateway returns 5xx responses because it cannot reach the backend
• OCI service API calls fail after being proxied through API Gateway
• Forwarded and host-related headers sent to HTTP backends do not match backend expectations
• opc-request-id values seen by the client, API Gateway logs, and backend do not match as expected