下单参数：

{"time_expire":"2020-09-11T02:00:17+08:00","combine_appid":"wx2842eb3326040563","sub_orders":[{"amount":{"total_amount":1,"currency":"CNY"},"mchid":"1596373591","out_trade_no":"xxx","settle_info":{"profit_sharing":true},"description":"充值测试","attach":"","sub_mchid":"1599732701"}],"combine_out_trade_no":"xxx","notify_url":"https://xxx.com","combine_mchid":"1596373591","scene_info":{"device_id":"123456789","payer_client_ip":"xxx"}}

支付参数：

{\"appid\":\"wx2842eb3326040563\",\"noncestr\":\"6OzzvJSjWclxyKbUC1vkY5O2xTzvCpCH\",\"package\":\"Sign=WXPay\",\"partnerid\":\"1596373591\",\"prepayid\":\"up_wx101603203976069803f0680ed90d1a0000\",\"sign\":\"bVGP/y3QSUW9NvxzSKY9mNYmdgHPT+IEC3aG2uUzEzTxeuJmarnvz/Mu1bfndMrJIXRnumPRPhBNWm9tsLUKxgRi+aF9SzjFe+cWrNdUQK0KeBKStgnznd0qnen1zuv2vKxVgnK9seQIVsUF3n82CZ1LSF7d73ufrCeqI4MWAXiWTJ0siZ5p6gqp23WcjUPg4Lx0zrs3MDNC5byx7GmwUi2ozF/8sSwUBQNv+5o2ubJRJLCczAaWmvdX9Ct3dVSwFEg4otldbAbIXox4bhYoFXbdLammAbJ40mRMacvS3F+0uWjBMKpY7csYLmZn4n+pVxBXMJFQ+z+FI5xLr703eQ==\",\"timestamp\":\"1599725000\"}

下单和微信APP支付使用的appid都是wx2842eb3326040563，为什么还提示appid不正确？