请求https://api.mch.weixin.qq.com/secapi/pay/multiprofitsharing接口

入参xml

<?xml version="1.0" encoding="UTF-8"?>

<xml>

<sign>C38F34D6ADA5FEE57D3CB859F5B8D13CCD23A852BF48D105639CD36A882C0730</sign>

<mch_id>1535035661</mch_id>

<sub_appid>wx23452b2ddcf9a3d8</sub_appid>

<sign_type>HMAC-SHA256</sign_type>

<sub_mch_id>1554287281</sub_mch_id>

<out_order_no>15696813752922691</out_order_no>

<appid>wxa239abb23be055f7</appid>

<nonce_str>WsltCOXih5YkMHFO50O2yKMvajmKo9ty</nonce_str>

<transaction_id>15695073782663080</transaction_id>

<receivers>[{"type":"MERCHANT_ID","account":"1554287281","amount":28,"description":"分到商户"},{"type":"PERSONAL_SUB_OPENID","account":"oXeTE5BA99EQt3eKBWO5n5lo4Gko","amount":10,"description":"分到个人"}]</receivers>

</xml>

返回xml：

<xml>

<return_code><![CDATA[SUCCESS]]></return_code>

<result_code><![CDATA[FAIL]]></result_code>

<err_code><![CDATA[PARAM_ERROR]]></err_code>

<err_code_des><![CDATA[分账接收方关系不存在，请检查参数中每个接收方的关系。]]></err_code_des>

<mch_id><![CDATA[1535035661]]></mch_id>

<sub_mch_id><![CDATA[1554287281]]></sub_mch_id>

<appid><![CDATA[wxa239abb23be055f7]]></appid>

<sub_appid><![CDATA[wx23452b2ddcf9a3d8]]></sub_appid>

<nonce_str><![CDATA[b4df9a421c355167]]></nonce_str>

<sign><![CDATA[91BFBE02D704BE51CC4D68E5D621E0AD041C519E13DADB76C519496A283A77D5]]></sign>

</xml>

求帮忙解决下这个问题啊。