Billing key with foreign card
tosspayments for subscription/payment services on our website. One of requirements is to provide monthly recurring payments with Korean & Foreign cards. That means user registers his card and it's used for monthly payments. According to API documentation I need to use 자동결제 API and issue billing key. However documentation also mentions that billing API doesn't support foreign cards in here https://docs.tosspayments.com/guides/billing/integration#1-고객-카드-등록하기 (해외카드, 해외결제는 지원하지...Web 메인결제UI는 왜 English버전이 없는가요?

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