Data objects in BPMN (Business Process Model and Notation) are primarily intended to represent data inputs, outputs, and data stores related to a business process. They serve as a key component in illustrating how data flows within a process, including the information necessary to perform tasks, the data generated as a result of those tasks, and the data that is stored and retrieved throughout the process. By visually capturing these relationships, data objects help stakeholders understand how data is utilized at various stages of the process.
This understanding is crucial for ensuring that all necessary information is available for decision-making, task completion, and effective process execution. They provide a clear picture of the interaction between tasks and the data they require or produce, making it easier to design more efficient business processes.