请求参数：

{"amount":{"currency":"CNY","refund":4720,"total":4720},"goods_detail":[{"goods_name":"舒客益生菌牙膏120g","merchant_goods_id":"232756","refund_amount":2360,"refund_quantity":2,"unit_price":2360}],"notify_url":"https://xx.com/callbackgateway/api/wechat/refund/notify/xx/xx","out_refund_no":"9I8Akf3hMtf4UM37J86pZ0sJGV85xoLt","out_trade_no":"20240405224800534141706271707136","reason":"商品舒客益生菌牙膏120g退款"}

返回参数：

{"code":"SYSTEM_ERROR","message":"系统繁忙，请稍后重试"}

整个系统的微信退款都正常，就这个订单退款请求时报了这个错误，请问有人遇到过吗？