Define Task Precedence

The task precedence indicates the execution-flow of a batch. The task precedence value facilitates you to determine the order in which the specific tasks of a batch are executed.

For example, consider a batch consisting of 4 tasks. First 3 tasks do not have a precedence defined and hence will be executed simultaneously during the batch execution. But, task 4 has precedence value as task 1 which indicates that, task 4 is executed only after task 1 has been successfully executed. You can set the task precedence between tasks or define to run a task after a set of other tasks. However, multiple tasks can be executed simultaneously and cyclical execution of tasks is not permitted. If the precedence for a task is not set, the task is executed immediately on batch execution. To define the task precedence in the Define Task window, perform the following steps:

1. Click the button corresponding to the task for which you want to add precedence task. The Task Precedence Mapping window is displayed. The Task Precedence option is disabled if a batch has only one task associated.
   1. Select the task you want to execute before the current task, from the Available Tasks pane and click >. You can press the Ctrl key for multiple selections.
   2. To select all the listed tasks, click >>.
   3. To remove a task, select the task from the Selected Tasks pane and click <.
   4. To remove all the selected tasks, click <<.
2. Click Save to update the task precedence.