Approval_url queryString lost

카카오페이 API
#1

우리는 일회성 결제를 시작했습니다. POST https://kapi.kakao.com/v1/payment/ready, 그리고 approval_url을 설정했습니다 (https://oem-host.fast-us.wgine.com/payment-center/auth-confirm?appSchema=zzfwv208adr&channel=25&orderId=CZ2309126RA87DHC&tradeCode=AZ20230912CXDTMJIXW9A8pre). 그러나 결제가 완료된 후 리디렉션 주소는 https://oem-host.fast-us.wgine.com/payment-center/auth-confirm?appSchema=zzfwv208adr&pg_token=3970d2ef0ea4d70f1ff0이며, 이러한 queryString 매개 변수가 누락됩니다: channel, orderId, tradeCode. 이유를 알려주실 수 있나요?

We initiated a one-time payment, POST https://kapi.kakao.com/v1/payment/ready, and set the approval_url (https://oem-host.fast-us.wgine.com/payment-center/auth-confirm?appSchema=zzfwv208adr&channel=25&orderId=CZ2309126RA87DHC&tradeCode=AZ20230912CXDTMJIXW9A8pre). However, after the payment is completed, the redirected address is https://oem-host.fast-us.wgine.com/payment-center/auth-confirm?appSchema=zzfwv208adr&pg_token=3970d2ef0ea4d70f1ff0, and it loses these queryString parameters: channel, orderId, tradeCode. Can you please tell me why this is happening?

#2

안녕하세요. 카카오페이입니다.
지난 9/13 고퀄 담당자 분께 답변드린내용입니다.
TID T500254f751439773158 로 문의를 주셨으며 확인해본결과 approval_url 이 위 공유주신 정보값으로 유입되지 않았습니다.

“approval_url\“:\“[https://oem-host.fast-us.wgine.com/payment-center/auth-confirm?appSchema=zzfwv208adr\](https://oem-host.fast-us.wgine.com/payment-center/auth-confirm?appSchema=zzfwv208adr\)“

참고부탁드립니다.
감사합니다.