The security management service can be utilized to manage the access control lists for objects in Checkbox. This service is considered an advanced web service and should only be utilized by developers with a strong background in access control lists and permissions. Working incorrectly with this service could corrupt permissions for your installation in ways that the Checkbox support team will not be able to assist in resolving.
In order to utilize this service, you will need an AuthToken from the authentication service, and you will need access to the surveys that you want to create invitations for within Checkbox.
Security Management Endpoint: https://[yourdomain]/services/securitymanagementservice.svc