결제 취소 문의 드립니다.

.
[code] => INVALID_REQUEST
[message] => .

는 cancelReason 관 cancelAmount .
CURLOPT_POSTFIELDS => "{"cancelReason":"test","cancelAmount":"{$amount}"}",


oid : MC41MTkzNDU0NDYxOTA5
paymentId : dJv2eBNjG0Poxy1XQL8RbMZJBZ0Jl987nO5Wmlg96RKwZz4Y
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