用的服务商模式，下单支付正常。 后续进行分账是出现了问题，添加分账方返回(子商户已经授权允许分账了的)：

array:9 [
  "return_code" => "SUCCESS"
  "result_code" => "FAIL"
  "err_code" => "NOAUTH"
  "err_code_des" => "无分账权限"
  "mch_id" => "1609557223"
  "appid" => "wx7eb2fbefbcd62b54"
  "receiver" => "{"type":"MERCHANT_ID","account":"1610104660","relation_type":"PARTNER"}"
  "nonce_str" => "61718ce8362680fc"
  "sign" => "5F20A98E5A1FAE3272F9289241489A364DBEFFCB7D90636B558DEBF22E8ED8AE"
]