User Guide for Site Users Add a subject to a study Enroll a screened candidate Complete enrollment after an enrollment failure Complete enrollment after an enrollment failure Click Enroll. Click the Enrollment failed icon () for the candidate.Enrollment fails if: The candidate doesn't meet study criteria. Data entered on the Enrollment form is incomplete. The candidate is ineligible for the study. Make the changes necessary to complete enrollment.For more information, see Why would an enrollment fail, and what can I do about it? Parent topic: Enroll a screened candidate