{
"mch_id": "string",
"txn_seqno": "string"
}curl --location 'https://openapi.lianlianpay.com/mch/v1/creditpay/common/close' \
--header 'Signature-Data;' \
--header 'Signature-Type: RSA' \
--header 'mch_id: 2020042200284052' \
--header 'sp_no;' \
--header 'timestamp: 20221109111509' \
--header 'Content-Type: application/json;charset=utf-8' \
--data '{
"mch_id": "string",
"txn_seqno": "string"
}'{
"ret_code": "",
"ret_msg": "",
"mch_id": "",
"txn_seqno": "",
"platform_txno": "",
"close_status": ""
}