Is it currently possible to have an external system call the Appian API to advance complete tasks in an Appian process instance?

RE: Is it currently possible to have an external system call the Appian API to advance complete tasks in an Appian process instance?

vikask146 — Fri, 20 May 2016 15:03:54 GMT

Did you get the answer of your question ? I would like to use API but not able to find to complete Task

RE: Is it currently possible to have an external system call the Appian API to advance complete tasks in an Appian process instance?

mathieud — Wed, 21 Oct 2015 19:27:31 GMT

From what I gather, the Web API is to read data not trigger processes. (please correct me if I'm wrong)

I think you have 2 options:

1. Publish a Process Model as a Web Service: forum.appian.com/.../Publishing_Process_Models_as_Web_Services.html

2. Alternatively, you could expose an database table to the external system where it could write the information required to start a process and then build a scheduled job in Appian that triggers a process.

RE: Is it currently possible to have an external system call the Appian API to advance complete tasks in an Appian process instance?

kara.peeler — Wed, 21 Oct 2015 18:37:53 GMT

Hello, Dylan. Have you taken a look at Appian's Web APIs? forum.appian.com/.../Web_APIs.html
There's a tutorial as well: forum.appian.com/.../Web_API_Tutorial.html.

RE: Is it currently possible to have an external system call the Appian API to advance complete tasks in an Appian process instance?

Shyam Bommakanti — Wed, 21 Oct 2015 17:18:48 GMT

I achieved this via custom servlet plugin on the Appian cloud. I created a servlet plugin that uses Appian API to complete UITs.

RE: Is it currently possible to have an external system call the Appian API to advance complete tasks in an Appian process instance?

Jim Schweitzer — Wed, 21 Oct 2015 16:56:30 GMT

For viewing tasks in an external system, look at the task list servlet plugin example: forum.appian.com/.../Custom_Servlet_Plug-ins.html

For advancing the processes, I'd look at putting in Receive Message nodes at the spots where process can be advanced externally, then writing an "interface" process model(s) that you can expose as web service, which would look up the appropriate process instance and use Send Message to move it along.