Calling a BPM process
You will create a reusable BPM process and will call it from your
SalesToContract process. Let's create a
Quotation Saving process, which performs the task of saving quotes through the SaveQuote service that we have been using. You have created the CatchSLA subprocess to handle SLA errors when the timer gets expired for the Finalize task. You will call this new BPMN process in the CatchSLA subprocess, to perform quote saving.
You will create a child process that will be a reusable process and can be invoked from many processes. Reusable processes can be started only by invoking from a call activity.
Reusable processes are not part of the SOA composite and hence you cannot access reusable processes from other SOA components. ...