Basic Customization > User Interface Customization > Constructing Wizards > Customizing Reusable Wizard Steps > Reusable Wizard Steps > SetContextWizStep > Solution Elements > Validator
  
Validator
The ContextWizardStepValidator is available to validate the data in the set context wizard step. The ContextWizardStepValidator just validates that the form data contains a valid container object reference.
This validator also determines if the step should be displayed in the wizard. If the context has been determined from the launch point the step will be skipped even though it is included in the wizard.