Data fields hold values that you can view at a step in a workflow. The values can be used by the workflow to test conditions. If the work item includes data fields for the current step in the workflow, you can view the data fields and their values. If the fields are defined as editable, you can also change the value.
For example, an expense report workflow might have a field for Expense Amount and a field for Employee Name.
To view and edit data field values: