self service "Could not validate this request's antiforgery token"

You may encounter this error while customizing Ellucian's self service. To fix this error, make sure you run the application in Local IIS, instead of IIS Express

After setting the default to Local IIS, you will want to delete all the cookies pertaining to the localhost. In chrome, go to Settings - Content Settings - All cookies and site data... then search for cookies belong to localhost

Delete these and try again. Similar steps should be taken with the browser you use to test self service.