https://community.appian.com/discussions/f/integrations/21030/502-bad-gatewayHas anyone received a 502 Bad Gateway response from calling a POST REST service via an integration and if so what was the cause and how did you fix the issue? We have an integration that calls an internal service to send emails from a corporate emailen-USTelligent Community 12https://community.appian.com/thread/82053?ContentTypeID=1Wed, 26 May 2021 10:02:37 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8b19f8b0-94a4-479d-806c-a56d7a874992Gavin Hume<p>Ok thanks for the response Stefan</p><div style="clear:both;"></div>https://community.appian.com/thread/82018?ContentTypeID=1Tue, 25 May 2021 16:34:05 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:7feaee28-7287-4b38-b491-bd763fe28ef0Stefan Helzle<p>The only way is to try to find out which hops are in-between and check logs&amp;config on each.</p><div style="clear:both;"></div>https://community.appian.com/thread/81977?ContentTypeID=1Tue, 25 May 2021 09:35:08 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:da15f4d3-511d-4934-8244-4e91ae8a377fGavin Hume<p>Yes that&#39;s where I think the issues is, somewhere in the connectivity between Appian and the service, so it could be the VPN, firewall, load balancer, etc. I&#39;m just not sure how we trace that to identify where the bottleneck is.</p><div style="clear:both;"></div>https://community.appian.com/thread/81914?ContentTypeID=1Mon, 24 May 2021 09:51:22 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:71278da7-de42-4f54-8a8a-8a3c3e016d66Stefan Helzle<p>AFAIK there is nothing you could do in Appian. If you tested the service itself, could it be that there is something in-between Appian and the service which you skip when testing directly? I think of a proxy, reverse-proxy or API management.</p><div style="clear:both;"></div>