Java 22
springdoc-openapi-starter-webmvc-ui 2.5.0
lombok 1.18.32

controller

@PostMapping(value = "/create", consumes = MediaType.APPLICATION_JSON_VALUE)
    public long createGroupChatWithAdminBotAndGetChatId(@RequestBody CreateGroupChatDto dto) 

object

@Getter
@Setter
@ToString
@EqualsAndHashCode
public class CreateGroupChatDto {
    private String chatTitle;
    private String chatDescription;
    private List<Long> userIdList;
    private long botId;
}

but when i change modificator to public for all fields its ok

What am I missing?