server3.get(OP).set(ADD);
server3.get(OP_ADDR).add("host", "slave").add("server", "main-three").add("system-property", "domain-test-property");
composite.get(STEPS).add(server1);
composite.get(STEPS).add(server3);
ModelNode response = masterClient.execute(composite);
validateFailedResponse(response);
String errorCode = getNotAuthorizedErrorCode();
List<Property> steps = response.get(SERVER_GROUPS, "main-server-group").asPropertyList();
Assert.assertEquals(2, steps.size());