@RequestMapping(method = RequestMethod.DELETE, value = "/reserve-positions") @ResponseStatus(HttpStatus.OK) @ResponseBody public Map<String, Integer> vacatePositions( @RequestParam(value = "reservationId") String reservationId) { ResponseEvent<Integer> resp = storageContainerSvc.cancelReservation(new RequestEvent<>(reservationId)); resp.throwErrorIfUnsuccessful(); return Collections.singletonMap("vacatedPositions", resp.getPayload()); }