8.7.4 Retiring a Champion Model Login to OFSSTSA using the user credentials with approval privileges. In the Workspace Summary, Sandbox tab, select the required workspace. Click Building Blocks and then click Models.The Models Summary page is displayed. Select the model you want to retire and click Actions and then Edit. Review the model, and then click the Deployment Overview tab. Click Request, provide the reasons for model retirement and then click Retire Champion.