https://community.appian.com/discussions/f/integrations/39837/unable-to-invoke-web-apiI am trying to invoke an Appian web-Api using Insomnia, which is a GET method, it queries db and fetches results. I am passing the Api key as header in insomnia. I have mapped the service accounts and security every thing correctly, but still i am niten-USTelligent Community 12https://community.appian.com/thread/151961?ContentTypeID=1Mon, 13 Oct 2025 10:37:20 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:f73b6553-01d8-40fd-b211-a41e1c6a8da9Harsha Sharma<p>Few things to check and try:</p> <ul> <li>Test API outside Appian if API works as expected - this confirms your configuration like URL, service account details etc are correct</li> <li>Once configuration is working as expected outside Appian but not in Appian then check network/ infrastructure settings for permissions.</li> </ul><div style="clear:both;"></div>https://community.appian.com/thread/151960?ContentTypeID=1Mon, 13 Oct 2025 09:32:09 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:1e72491e-9470-4542-ac84-3afb32c15d3fShubham Aware<p><span>Hostname in your API URL is not reachable or not resolving. Check the exact API URL in Insomnia for typos, ensure your network/DNS can resolve that hostname, and verify no firewall or VPN is blocking access.</span></p><div style="clear:both;"></div>