Exposing Flow as a Web Service

Last Updated: 05/02/2018 Introduced in Version: 2.0

Decisions flows can be exposed as an external web service. This allows external applications to utilize this flow via a standard SOAP web service call.

Create a new flow. Click on any blank area of the canvas to edit the properties of the flow.
Check the Create Service check box.
A Service Name and Main Method Name will be suggested. However, you can change these values to be whatever you want.
 Navigate to All Steps > Data > Numbers and select the Add step. 
When you save the flow, a web service will be created for your flow. A notification pop up will show you the service URL. The URL for your service will be 
http://[PortalURL]/decisions/Primary/API/[Service name specified in the flow]
If you paste the service URL into a browser address line, instructions will appear: