The Workflow Manager validates each task in the workflow as you create it. When you save or validate the workflow, the Workflow Manager validates all tasks in the workflow except Session tasks. It marks the workflow as not valid if it detects that any task in the workflow is not valid.

The Workflow Manager verifies that attributes in the tasks follow validation rules. For example, the user-defined event you specify in an Event task must exist in the workflow. The Workflow Manager also verifies that you linked each task properly. For example, you must link the Start task to at least one task in the workflow.

When you delete a reusable task, the Workflow Manager removes the instance of the deleted task from each workflow that contains the task. The Workflow Manager also marks the workflow as not valid when you delete a reusable task that a workflow uses.

The Workflow Manager verifies that a folder does not contain duplicate task names, and it verfies that a workflow does not contain duplicate task instances.

You can validate reusable tasks in the Task Developer. Or, you can validate task instances in the Workflow Designer. When you validate a task, the Workflow Manager validates the task attributes and the links. For example, the user-defined event you specify in an Event tasks must exist in the workflow.

The Workflow Manager uses the following rules to validate tasks:

When a task instance is not valid, the workflow running the task instance becomes not valid. When a reusable task is not valid, it does not affect the validity of the task instance in the workflow. However, if a Session task instance is not valid, the workflow might still be valid. The Workflow Manager validates sessions differently.

To validate a task, select the task in the workspace and click

Tasks

Validate

. Or, right-click the task in the workspace and choose

Validate

.