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2026-11-12

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Document payin refund status

  • Query payin: clarify that data.status = REFUND means refunded, and add a status explanation and query response example.
  • Payin notification: add REFUND (refunded) to the documented status values, provide a refund notification example, and explain refund status changes after payment success and idempotent handling of duplicate notifications.
  • Refund status uses the existing status field, with no new request parameters or response fields. amount and fee still represent the original order amount and order fee; neither represents the actual refund amount.
  • Add this page and its navigation entry. Future API documentation changes will be listed in reverse chronological order.