请求：
{"reason":10000014,"amount":28224,"productId":"10000*****1211","orderId":"3734***********7888","count":1,"type":"REFUND","requestId":"3d38f6067f094c5788731d04f308a4fb","skuId":"393****650","desc":"教练主动发起退款"} 

返回：
{"errcode":10021043,"errmsg":"当前商品不支持售后，请检查参数 rid: 69e4fa56-12512fdc-4f85eebd"}

已确认当前订单属于该商户，退款金额<用户实付金额，商品支持售后