当我在2个不同的事务中保存对象时，代码中出现以下错误：
对象乐观锁定失败异常：具有标识符[]得类[]得对象：乐观锁定失败;嵌套的异常是组织。休眠。行已被另一事务更新或删除（或未保存值Map不正确）：[]
我一直在尝试为异常编写测试。但是，所有测试都已通过。
我的测试：

@Slf4j
@Rollback
@Transactional
@DataJpaTest
@ActiveProfiles({"test", "h2"})
@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
@Import(value = {
        StatusService.class
})
class StatusServiceTest {

    @Autowired
    private RequestRepository repository;
    @Autowired
    private StatusService statusService;

    private Request request;
    private final UUID requestUID = UUID.randomUUID();

    @BeforeEach
    void setUp() {
        request = new Request();
        request.setRequestUID(requestUID);
        repository.save(request);
    }

    @Test
    void updateStatus() {
        Request request1 = repository.findByRequestUID(requestUID);
        Request request2 = repository.findByRequestUID(requestUID);
        statusService.updateStatus(request1, "Done");
        statusService.updateStatus(request2, "In_progress");
    }
}

服务项目：

@Service
@Slf4j
@RequiredArgsConstructor
public class StatusService {
    private final RequestRepository repository;

    @Transactional
    public void updateStatus(Request request, String status) {
        // Some simple logic
        request.setStatus(status);
        repository.save(request); // The line with error
    }
}

产品型号：

@Entity
@Getter
@Setter
@NoArgsConstructor
@JsonInclude(JsonInclude.Include.NON_NULL)
public class Request {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @JsonIgnore
    protected Long id;

    protected UUID requestUID;

    private String status;

    // Some additional fields

    @JsonIgnore
    @Version
    private Integer version;

}

我哪里错了？如何编写触发错误的测试？