Optionalacs_ID of the access system user that you want to add to an access group. You can only provide one of acs_user_id or user_identity_id.
Optionaluser_ID of the desired user identity that you want to add to an access group. You can only provide one of acs_user_id or user_identity_id. If the ACS system contains an ACS user with the same email_address or phone_number as the user identity that you specify, they are linked, and the access group membership belongs to the ACS user. If the ACS system does not have a corresponding ACS user, one is created.
ID of the access group to which you want to add an access system user.