Hi All, I am exposing my process model as a service.I am able to call

Here is an option. Create a callback parameter in the process model that you have exposed as a web service. When the web service / process model is called, the process model can then report back status along the way, using the callback url parameter. This assumes the process model will make http calls using the out-of-the-box functionality. Also note that if the callback requires authentication (e.g. basic auth), you will have to collect the username and password as PVs. Hope this helps.

Here is an option. Create a callback parameter in the process model that you have exposed as a web service. When the web service / process model is called, the process model can then report back status along the way, using the callback url parameter. This assumes the process model will make http calls using the out-of-the-box functionality. Also note that if the callback requires authentication (e.g. basic auth), you will have to collect the username and password as PVs. Hope this helps.