In the previous chapter, we witnessed many conversations between processes and services. There were conversations and collaborations to not only create new instances of the process but also conversations and interactions with the in-flight process. Imagine when there are many instances of the Loan Origination process and each instance is handling a different applicant, how will the BPM engine make sure that an interaction is meant for a specific process instance of a Loan Origination application? The previous chapter contains a BackOffice process, Loan Origination process, and many other processes. The BackOffice process interacts with the Loan Origination process; however, there might be cases where a loan originates from some other source such as a web application or by an applicant visiting the branch and so on. How does a system make sure that if the feedback process has started it should deal with that particular applicant's details for which it was initiated...