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The Special Return Mechanism (MED) endpoints expose payer-side case creation, listing, detail, and cancellation. Infraction endpoints list and retrieve the related infraction records available to the authenticated account.

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MED endpoints

  • Create case — POST /v3/med/create
  • List cases — POST /v3/med/list
  • Get case — POST /v3/med/detail
  • Cancel case — POST /v3/med/cancel

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Infraction endpoints

  • List infractions — POST /v3/infractions/list
  • Get infraction — POST /v3/infractions/detail

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Authentication and account targeting

All endpoints use signed POST requests. Send X-Client-ID, X-Timestamp, X-Nonce, and X-Signature. X-Content-Hash is optional for inbound API calls. For a USER credential, send both X-ISPB and X-Account-Number to select the account. An ACCOUNT credential can omit the pair and use its bound account. Case details can include timeline events, infractions, and refund summaries. Do not infer a final case outcome from the create response alone.