-请求的具体API接口（提供文档地址和请求的URL）：

https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi

文档：https://pay.weixin.qq.com/wiki/doc/apiv3/wxpay/pay/transactions/chapter3_2.shtml

- 问题发生时间【必填】：

2020/10/09 10：10

- 商户号【 必填】：

1428025202

- 商户订单号【 必填】：

abc522_00112

- 相关报错信息文案：

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

- 问题截图或视频：

-完整的请求和返回参数以及单号：

POST /v3/pay/transactions/jsapi HTTP/1.1
Content-Type: application/json
Authorization: WECHATPAY2-SHA256-RSA2048 mchid="1428025202",serial_no="26A932C33B6B01AC644D354147A2A72CC489E35E",nonce_str="1602209425932",timestamp="1602209426",signature="mRkg1+USqp8LvqqJLSd2B7htDEQCpPa80OZrjbnaDnRV1xV28VdFpA4LiVeEoz7MaYCg8aNB9sna1qKRwpCHpWYnzoSI09rcZeEa0DzyiT1PgrS0F3RiAaCeWa+k07/D3YXGn7+S1RozvgFo74xcT/adgKXDrN95RJvZ/aYL95ZpZOYDuXOjBzFjdS/SYUScmBs5VIJ7S6RGZz1nqz+n7bxZFNn2NMuG/+DehjvSY3QES8jA+w0+8WBy9P71KRo+VlS7dEPKlLsAOEv7I5AMMQ0Z+CHSF/Q0MRIrpMSpmxu6qHMI9JqElROigqNphKtxXGX/Eoj6nFDqSkga2ttUBQ=="
User-Agent: PostmanRuntime/7.26.5
Accept: */*
Host: api.mch.weixin.qq.com
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Content-Length: 301
{
    "description": "description",
    "mchid": "1428025202",
    "out_trade_no": "abc522_00112",
    "appid": " wx8ba713bc3341920c",
    "notify_url":"https://www.abc.com/wxpay/pay.php",
	"amount": {
		"total": 100,
		"currency": "CNY"
	},
	"payer": {
		"openid": "onJdN05jLLhnRPy69dhpEIdhUdY4"
	}
}
HTTP/1.1 500 Internal Server Error
Server: nginx
Date: Fri, 09 Oct 2020 02:10:27 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 66
Connection: keep-alive
Keep-Alive: timeout=8
Cache-Control: no-cache, must-revalidate
X-Content-Type-Options: nosniff
Request-ID: 08938DFFFB0510AB0418ECB2C05520DC4328A9F702-52003
Content-Language: zh-CN
{"code":"SYSTEM_ERROR","message":"系统繁忙，请稍后重试"}