code: public static Response getBatchDeleteResponse(App app, List<String> ids) {
  		try (final Metrics.Context context = Metrics.time(app == null ? null : app.getAppid(),
  				RestUtils.class, "batch", "delete")) {
  			LinkedList<ParaObject> objects = new LinkedList<>();
  			if (app != null && ids != null && !ids.isEmpty()) {
  				if (ids.size() <= Config.MAX_ITEMS_PER_PAGE) {
  					for (ParaObject pobj : Para.getDAO().readAll(app.getAppIdentifier(), ids, true).values()) {
  						if (pobj != null && pobj.getId() != null && pobj.getType() != null) {
  							// deleting apps in batch is not allowed
  							if (isNotAnApp(pobj.getType()) && checkIfUserCanModifyObject(app, pobj)) {
  								objects.add(pobj);
  							}
  						}
  					}
  					Para.getDAO().deleteAll(app.getAppIdentifier(), objects);
  				} else {
  					return getStatusResponse(Response.Status.BAD_REQUEST,
  							"Limit reached. Maximum number of items to delete is " + Config.MAX_ITEMS_PER_PAGE);
  				}
  			} else {
  				return getStatusResponse(Response.Status.BAD_REQUEST, "Missing ids.");
  			}
  			return Response.ok().build();
  		}
  	}
docs: Batch delete response as JSON.
  @param app the current App object
  @param ids list of ids to delete
  @return a status code 200 or 400