Standard
- The return window anchors to delivery, not to the order date. Orders already placed keep the policy version they were sold under.
- Merchants choose a return formula — 14, 30 or 60 days — among those their home country allows. In the UK, 14 days is labelled as the legal minimum.
- Added
eligible_untilper line, recorded once and never recomputed.
API
GET /v1/orders/{id}/windowreturnspolicy_version_id.- Added
include_lines=falseto reduce the payload on high-volume polling. - Webhook payloads are signed with an HMAC, sent in a
v1=prefixed header.