Defining Task Precedence

Task Precedence indicates the execution-flow of a Batch. Task Precedence value in the Task Details 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 does 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 Task precedence between Tasks, or schedule a Task to Run after another Task, or even 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 it is executed immediately on Batch execution.

To define the task precedence in the Batch Maintenance window:

1. Click Precedence icon under the Precedence column of the task for which you want to add precedence task.
   The Task Precedence Mapping browser is displayed.

   Note:

   Task Precedence option is disabled if a batch has only one task associated.
   • Select the required Task from the Task List and click Move icon. You can press Ctrl key for multiple selections.
   • To select all the listed Tasks, click Move All icon .
   • To remove a Task, select the task from Select Tasks pane and click Remove All icon .
   • To remove all the selected Tasks, click Remove All icon .
2. Click OK and update Task Precedence definition.