Assign a defect to a test case After reporting a defect from a failed test, you can assign the defect to a test case. Before you begin The Report Defect link is available only if Agile Development plugin is installed. Procedure From the Test form, click the Assign Defect to Test Case related link. Select a defect from the Assign Defect to Test Case dialog box. Click OK. The defect appears on the Test Plan form in the Test Plan Defects related list.