A parallel activity acts as a wrapper around certain activities. The effect of using a parallel activity at runtime is that multiple instances of the wrapped activity are executed in parallel. To date, the only supported types of wrapped activity are Manual and Decision activities. Therefore, executing a parallel activity currently equates to the creation and allocation of multiple tasks in parallel.
A list workflow data object must be associated with a parallel activity. The number of items in this list workflow data object will determine the number of instances of the wrapped activity that will be created by the workflow engine.
The metadata associated with parallel activities is described in the Parallel chapter of the Cúram Workflow Reference Guide.