父级标签可以为空

server/yusp-tagging-core/src/main/java/cn/com/yusys/yusp/domain/vo/TagSaveVo.java

@@ -46,7 +46,6 @@ public class TagSaveVo {
     /**
      * 父级ID
      **/
-    @NotBlank(message = "上级标签不能为空")
     @ApiModelProperty(value = "父级ID", required = true)
     private String parentId;