The Workflow Manager validates worklets when you save the worklet in the Worklet Designer. In addition, when you use worklets in a workflow, the Integration Service validates the workflow according to the following validation rules at run time:

When a worklet instance is invalid, the workflow using the worklet instance remains valid.

The Workflow Manager displays a red invalid icon if the worklet object is invalid. The Workflow Manager validates the worklet object using the same validation rules for workflows. The Workflow Manager displays a blue invalid icon if the worklet instance in the workflow is invalid. The worklet instance may be invalid when any of the following conditions occurs:

For non-reusable worklets, you may see both red and blue invalid icons displayed over the worklet icon in the Navigator.