What does the prefix 'ac!' refer to in process definition?

The prefix 'ac!' in process definitions refers to all variables defined as node inputs. This prefix is used to access the input variables that a specific process node can accept when it is executed. By utilizing 'ac!', developers ensure that the correct data is being pulled into the node, allowing for accurate processing and execution of the corresponding business logic.

In this context, all input variables provided to a node are prefixed with 'ac!' to distinguish them clearly from other variable types, such as local variables or constants that may be used within the process model. This method of referencing ensures clarity and prevents variable naming conflicts, making it easier to maintain and troubleshoot process models.

Understanding this prefix is essential for effective process design in Appian, as it underlines how data flows into different parts of the process model and how those inputs are utilized during process execution.