参数如下：

{"offerId":"1450510879","buyQuantity":1,"env":0,"currencyType":"CNY","productId":"wx60c7e2cb66b901b7","goodsPrice":1,"outTradeNo":"outTradeNo_1780906387083","attach":"ocypW1yHr8NcSDeiCIKfP7Ca4rBg"}

微信支付商户号

1720652168

AppID(小程序ID)

wx60c7e2cb66b901b7

错误信息：

{errMsg: "requestVirtualPayment:fail 小程序appid和虚拟支付商户号未绑定，可在MP平台点击支付与交易 - 微信支付 - 商户号管理，确认授权申请", errno: -15001, errCode: -15001}