Sample Request Payload

The deprecated pan and cvv fields are no longer populated and are always null; they will be retired soon.

{
  "card":{
    "cardId":"8f9c080b-b6a7-4208-aa42-8666e1482f93",
    "idempotencyKey":"f3f68ce3-c1eb-4e19-8b22-1ebaef3381f9",
    "status":"Failed",
    "name":"Seisjrklardy Vfcskrqycugqa",
    "last4":"2575",
    "address":"Ewpkjuwpwg",
    "isActive":true,
    "clientNote":null,
    "currency":"GBP",
    "dateEnteredUtc":"2025-09-29T07:55:09.119Z",
    "purseId":4357502.0,
    "error":{
      "code":"FailedToSelectCardProgram",
      "description":"No card program matched the requested currency",
      "internalErrorCode":63010
    }
  },
  "event":"CardIssuanceFailed",
  "pan":null,
  "cvv":null
}

Why the issuance failed

card.error carries the reason. It is present on this webhook because card.status is Failed.

Field	Type	Description
`card.error.code`	string	Coarse classification: `Unknown`, `FailedToSelectCardProgram` or `InternalError`
`card.error.description`	string	A diagnostic sentence. It may name internal parameters and is not a partner-facing message — do not show it to an end user
`card.error.internalErrorCode`	integer \| null	The specific reason, from the same vocabulary a failed API request uses. See Cards API Error Codes. `null` when the failure carried no specific reason — fall back to `code`

Branch on internalErrorCode rather than on code or on the text of description: code is too coarse to act on, and description is diagnostic wording that can change.