{
"cardId": "string",
"userReqNo": "string",
"refundAmount": 0,
"channelType": "string",
"groupId": "string"
}
curl --location --request POST '/openapi/vcc/card/refund' \
--header 'Content-Type: application/json' \
--data-raw '{
"cardId": "string",
"userReqNo": "string",
"refundAmount": 0,
"channelType": "string",
"groupId": "string"
}'
{}