微信支付云开发退款接口，cloud.cloudPay.refund报错？

这个是退款接口的调用：

await cloud.cloudPay.refund(refundRequest);

refundRequest = {"nonce_str":"15D55664A85FC7A3A28D3C1C2D51B3AA","sub_mch_id":"1601738675","transaction_id":"4200000590202008085608043077","out_trade_no":"5ddc1fbd5f2ea08e003bd92469f17958","out_refund_no":"5ddc1fbd5f2ea08e003bd92469f17958507ca9577c0405917450f3dd14a6ffca","total_fee":1,"refund_fee":1}

请求后报错：

这个商户id的退款api是已经授权了的