//было
@PostMapping("create")
    public @ResponseBody
    String create(@RequestBody @Valid OutgoingCallTaskServiceLegacy.CreateCallTaskRequest request) {
        return outgoingCallTaskService.create(request).getId();
    }

//стало
    @PostMapping("create")
    public @ResponseBody
    ResponseEntity<String> create(@RequestBody @Valid OutgoingCallTaskServiceLegacy.CreateCallTaskRequest request) {
        ResponseEntity<String> responseEntity;
        CallTaskController.CallTaskCreatedResponse response = outgoingCallTaskService.create(request);
        if (response.getId() != null) {
            responseEntity = new ResponseEntity<>(response.getId(), HttpStatus.OK);
        } else {
            responseEntity = new ResponseEntity<>(HttpStatus.BAD_REQUEST);
        }
        return responseEntity;
    }