What is difference between Start Process Smart Service and Subprocess?

Question

When to use subprocess and when to Start Process smart service? 
 I have a question that if we can start a process asynchronously using sub process then why there is a need of start process smart service ? As start process smart service starts a process asynchronously which can be achieved by sub process also

Sidhant Behura · Answer

Hi diptis, 
 
The Start Process smart service is available as an expression function that can be executed inside a saveInto on a Interface Component or as part of a Web API. 
 
So if you want to trigger a process model on click of a button or on an action performed on an Interface Component, subprocess wont help. 
 
If you want to trigger a process model in a different Appian instance, you cannot use subprocess. Instead you have to use call a Web API which is in the target environment and in that Web API you need to trigger the process model using a!startProcess(). 
 
Hope this answers your question. 
 
Regards, 
Sidhant Behura

mohamedt808 · Answer

Hi Dipti , 
 
While Using Start process smart service you can parametrise the inputs i.e. You can start any process model . But in Sub process you have to define it. 
 
Also other important thing to consider is that sub process node starts the process in same engine as the parent process . so if this is called in MNI or loop a specific engine will load up which is a bad design . Start Process Smart service does that engine balancing efficiently . 
 
Regards, 
Thoufiq.

What is difference between Start Process Smart Service and Subprocess?

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