Log in as admin Go to course and enable self enrolment Try enrol as student in that course and you should be able to self enrol. Test webservice (refer attached rest-ws-client) Enable webservices and test enrol_self_enrol_user with courseid = {above_course} # Enable webservices and test enrol_self_enrol_user with courseid = {above_course} userid = {above_user}