Define Dependencies

Explanation

This activity is used to enter dependencies between work tasks within one work order. This is useful if the work tasks are to be executed in a specific order. The relationships between the work tasks are defined by selecting a work task and define its predecessor(s). The dependency type Finish to Start declares that the work task should be completed before the work of its predecessor(s) can start.

If a scheduling engine is used, the dependency information (along with other parameters) are used to determine the order of the planned schedule and allocations of the tasks. Dependencies between work tasks are used as a hard constraint in scheduling to get the correct order of executing the work tasks.

Prerequisites

Before defining dependencies, the following must have been completed:

• A minimum of two work tasks must exist within the work order.

System Effects

As a result of this activity, dependencies between work tasks are defined. The dependencies  are used as constraints if a scheduling engine is used for planning and allocations.

Window

Work Task
Work Tasks
Prepare Work Order
Work Order Structure

Related Window Descriptions

Work Task
Prepare Work Order
Work Order Structure

Procedure

Use the following procedure to enter the information:

1. Open the Work Task or the Work Tasks window, alternatively select the Work Task tab in the Prepare Work Order or the Work Order Structure window.
2. Query the work order and then select the appropriate work task. (F3)
3. Right-click and point to Dependencies to open the Dependencies dialogue.
4. In the dialog, select the work task(s) that should be defined as predecessor work task(s) by ticking the Set Dependency check box.
5. Note that the dependency type is set as Finish to Start.
6. Click Save and Close button save the information and close the dialogue.