Invalid signature

[matheusczi]

I'm trying to create a payment URL following the examples but the API call always return the following error:

  code: '40002',
  msg: 'Invalid Arguments',
  subCode: 'isv.invalid-signature',
  subMsg: '验签出错，建议检查签名字符串或签名私钥与应用公钥是否匹配，网关生成的验签字符串为：app_id=9021000123609320&biz_content={"out_trade_no":"商家的交易码，需保持唯一性","total_amount":"0.1","subject":"测试订单"}&charset=utf-8&method=alipay.trade.pay&notify_url=http://www.notify.com/notify&sign_type=RSA2&timestamp=2023-08-03 17:42:46&version=1.0'

The request:

const result = await alipaySdk.exec('alipay.trade.pay', {
    notify_url: 'http://www.notify.com/notify', 
    bizContent: {
      out_trade_no: '商家的交易码，需保持唯一性',
      total_amount: '0.1',
      subject: '测试订单',
    }
  });

What I'm missing?

[troyeagle]

It seems to be the privateKey / alipayPublicKey configured when alipaySdk initialized is not valid.
You could log in the Alipay site, following this guide https://opendocs.alipay.com/common/02kdnf or ask for technical support.