获取快递单号的接口，有的时候能返回快递单号，有的时候返回不出来

appid ：wxae2f44315b70f177

 $orderUrl="https://api.weixin.qq.com/cgi-bin/express/business/order/add?access_token=".$access_token;

$order=M('order')->where('id='.$order_id)->field('uid,order_sn,address_xq,product_num,name,tel,receiver,photo_x')->find();

$user=M('user')->where('id='.$order['uid'])->field('openid')->find();

$postdata['add_source']=0;

$postdata['order_id']=$order['order_sn'];

$postdata['openid']=$user['openid'];

$postdata['delivery_id']='YUNDA';

$postdata['biz_id']='11111';

//发件人

$postdata['sender']['name']=$j_name;

$postdata['sender']['mobile']=$j_tel;

$postdata['sender']['province']='辽宁省';

$postdata['sender']['city']='盘锦市';

$postdata['sender']['area']='111';

$postdata['sender']['address']='111';

//收件人

$address_arr= explode(" ",$order['address_xq']);

$postdata['receiver']['name']=$order['receiver'];

$postdata['receiver']['mobile']=$order['tel'];

$postdata['receiver']['province']=$address_arr[0];

$postdata['receiver']['city']=$address_arr[1];

$postdata['receiver']['area']=$address_arr[2];

$postdata['receiver']['address']=$address_arr[3];

// 包裹信息，将传递给快递公司

$postdata['cargo']['count']=$order['product_num'];

$postdata['cargo']['weight']='10';

$postdata['cargo']['space_x']='50';

$postdata['cargo']['space_y']='50';

$postdata['cargo']['space_z']='50';

$postdata['cargo']['detail_list']['name']=$order['name'];

$postdata['cargo']['detail_list']['count']=$order['product_num'];

//商品信息，会展示到物流服务通知和电子面单中

$photo=__DATAURL__.$order['photo_x'];

$postdata['shop']['wxa_path']=$wx_url;

$postdata['shop']['img_url']=$photo;

$postdata['shop']['goods_name']=$order['name'];

$postdata['shop']['goods_count']=$order['product_num'];

//保价信息

$postdata['insured']['use_insured']='0';

$postdata['insured']['insured_value']='0';

//服务类型

$postdata['service']['service_type']='0'; //服务类型ID

$postdata['service']['service_name']='标准快件'; //服务名称

$postdatas=json_encode($postdata,JSON_UNESCAPED_UNICODE);

$success=$this->Post_M($orderUrl,$postdatas);

$success = json_decode($success,true);

    return $success;

返回的值：array(2) { ["errcode"]=> int(48001) ["errmsg"]=> string(44) "api unauthorized hints: [xDECIOLoRa-7RtlwA!]" }

操作时间：2020/6/10 8:49