https://community.appian.com/discussions/f/new-to-appian/39179/how-to-handle-timeout-limitation-in-a-startprocess-with-issynchronous-true-appian-24-4Hi, We are currently using the a!startProcess function within a Web API to initiate a process when triggered by an external API call. Our goal is to return a response to the external system using the onSuccess parameter with fv!processInfo. Howeveren-USTelligent Community 12https://community.appian.com/thread/148452?ContentTypeID=1Wed, 28 May 2025 13:02:04 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:df389b0c-11b1-4a82-a762-2c93bd0da3cdMike Schmitt[quote userid="55805" url="~/discussions/f/new-to-appian/39179/how-to-handle-timeout-limitation-in-a-startprocess-with-issynchronous-true-appian-24-4"]<span style="color:#ff0000;"><strong>What Appian Version is recommended </strong></span>[/quote] <p>I&#39;m not sure what you mean by &quot;what appian version&quot;... but also remember that you&#39;re free to continue using the old/deprecated version of a!startProcess() that performs synchronously as long as the process is chained.&nbsp; Though I think implementing a solution closer to Stefan&#39;s Answer 2 above would potentially be more future-proof.</p><div style="clear:both;"></div>https://community.appian.com/thread/148451?ContentTypeID=1Wed, 28 May 2025 12:38:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:65e6f456-1410-474b-85e0-7243e8b22aa1Stefan Helzle<p>1) No</p> <p>2) Return a message saying: &quot;Working on it. Call this other URL the get the final result!&quot;</p> <p>3) Not sure what you mean. This is the new way.</p><div style="clear:both;"></div>