What does the domain prefix 'pv!' represent in Appian?

The domain prefix 'pv!' in Appian signifies a Process Variable. Process Variables are used within a process model to store data that is specific to a particular instance of a process. These variables are dynamic and can change values throughout the process execution. They are essential for capturing and manipulating data as the workflow progresses, allowing for the implementation of business logic and decision-making based on user inputs and other system interactions.

In Appian, prefixes help identify the type of data structure being used, and understanding these conventions is critical for effective development and process design. In this case, 'pv!' clearly delineates that the variable is tied specifically to a process, distinguishing it from other types of variables such as constants or record fields, enhancing clarity within the application’s code.