参数：

{
    "button":[
        {
            "name":"人才招聘",
            "sub_button":[
                {
                    "type":"view",
                    "name":"企业招聘",
                    "url":"http://m.wanyuan.ccoo.cn/post/job/"
                },
                {
                    "type":"view",
                    "name":"个人求职",
                    "url":"http://m.wanyuan.ccoo.cn/post/qiuzhi/"
                },
                {
                    "type":"view",
                    "name":"兼职招聘",
                    "url":"http://m.wanyuan.ccoo.cn/post/jianzhi/"
                }
            ]
        },
        {
            "name":"房屋租售",
            "sub_button":[
                {
                    "type":"view",
                    "name":"万源楼盘",
                    "url":"http://m.wanyuan.ccoo.cn/post/xinloupan/"
                },
                {
                    "type":"view",
                    "name":"房屋售买",
                    "url":"http://m.wanyuan.ccoo.cn/post/fangwu/fc_chushou.aspx"
                },
                {
                    "type":"view",
                    "name":"房屋出租",
                    "url":"http://m.wanyuan.ccoo.cn/post/fangwu/fc_chuzu.aspx"
                },
                {
                    "type":"view",
                    "name":"求租住房",
                    "url":"http://m.wanyuan.ccoo.cn/post/fangwu/xq"
                }
            ]
        }
    ]
}

结果：

"errcode":40120,"errmsg":"invalid use sub button type hint: [7GvLGA08410356]"}

哪里出了问题？