The user specified in ownerId is the owner of the created course and added as a teacher. A non-admin requesting user can only create a course with themselves as the owner. Domain admins can create courses owned by any user within their domain.
This method returns the following error codes:
PERMISSION_DENIED if the requesting user is not permitted to create courses or for access errors.
NOT_FOUND if the primary teacher is not a valid user.
FAILED_PRECONDITION if the course owner's account is disabled or for the following request errors:
UserCannotOwnCourse
UserGroupsMembershipLimitReached
ALREADY_EXISTS if an alias was specified in the id and already exists.