$profitShare['sub_mchid'] = '1579967411'; //填写的服务商户号 

$profitShare['transaction_id'] = '4310300103202004238398676815'; //微信支付订单号 4.23

$profitShare['out_order_no'] = 'WxPay158762107550238S1587432661'; //商户系统内部的分账单号，在商户系统内部唯一（系统生成二级商户订单号）

$profitShare['receivers'][0]['receiver_mchid'] = '1587432661'; //my  接收方

$profitShare['receivers'][0]['amount'] = 5;

$profitShare['receivers'][0]['description'] = '分给商户1587432661';

$profitShare['finish'] = true;

$electricityObj = new ElectricityModel();

$shareResult = $electricityObj->profitSharing($profitShare); //调用微信请求分账

微信返回的错误信息：