https://community.appian.com/discussions/f/integrations/38647/unable-to-get-issuer-certificate-while-invoking-post-webapi-in-appianWhile invoking a POST webAPI from Postman, I am getting error as below: &quot;Unable to get Issuer certificate&quot; . Authentication used here API-Key. Passing as Header: Appian-Api-Key What can be possible reasons?en-USTelligent Community 12https://community.appian.com/thread/146043?ContentTypeID=1Thu, 06 Mar 2025 12:49:41 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8c984975-074c-44f2-a330-04a67fe3eb50Stefan Helzle<p>This points towards a SSL certificate issue. The server uses a certificate your client cannot validate.</p> <p>Found this:&nbsp;<a href="https://stackoverflow.com/questions/55168352/ssl-certificate-problem-unable-to-get-issuer-certificate">stackoverflow.com/.../ssl-certificate-problem-unable-to-get-issuer-certificate</a></p><div style="clear:both;"></div>