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WEBHOOK
CARD_TERMINATION_REFUND
{
  "event":       "CARD_TERMINATION_REFUND",
  "eventId":     "evt_01HXY123456ABCDEF",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-07-08T09:00:00Z",
  "data": {
    "cardId":       "crd_01HXYZ5555ABCDEF1111",
    "cardholderId": "chd_01HXYZ1111ABCDEF0000",
    "amount":       12.50,
    "currency":     "USD",
    "reference":    "9f1e6b31f6fd010a6e8bdd317e8579",
    "timestamp":    "2026-07-08T09:00:00Z"
  }
}

{}
Fires when a card is terminated and its remaining prefunded balance is returned to your program balance. The reference is the provider transaction id — unique per refund — so use it as your idempotency key.

​
Event Type

CARD_TERMINATION_REFUND

​
Payload

{
  "event":       "CARD_TERMINATION_REFUND",
  "eventId":     "evt_01HXY123456ABCDEF",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-07-08T09:00:00Z",
  "data": {
    "cardId":       "crd_01HXYZ5555ABCDEF1111",
    "cardholderId": "chd_01HXYZ1111ABCDEF0000",
    "amount":       12.50,
    "currency":     "USD",
    "reference":    "9f1e6b31f6fd010a6e8bdd317e8579",
    "timestamp":    "2026-07-08T09:00:00Z"
  }
}

​
Payload Fields

FieldTypeDescription
cardIdstringThe terminated card ID
cardholderIdstringThe cardholder the card belonged to
amountnumberRefunded amount, credited to your program balance
currencystringISO-4217 currency of the refund
referencestringProvider transaction id — unique per refund; use it as your idempotency key
timestampstringISO 8601 time the refund was processed

​
Common Use Cases

  • Reconcile the returned balance against your program ledger
  • Log the refund for audit purposes, keyed on reference
Deduplicate on reference. A webhook retry re-delivers the same reference; a genuinely new refund always carries a new one.
{
  "event":       "CARD_TERMINATION_REFUND",
  "eventId":     "evt_01HXY123456ABCDEF",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-07-08T09:00:00Z",
  "data": {
    "cardId":       "crd_01HXYZ5555ABCDEF1111",
    "cardholderId": "chd_01HXYZ1111ABCDEF0000",
    "amount":       12.50,
    "currency":     "USD",
    "reference":    "9f1e6b31f6fd010a6e8bdd317e8579",
    "timestamp":    "2026-07-08T09:00:00Z"
  }
}

{}

Authorizations

​
Authorization
string
header
required

API key from the FYATU CaaS portal. Pass as Authorization: Bearer <key>.

Body

application/json
​
event
string
Example:

"CARD_TERMINATION_REFUND"

​
eventId
string
​
businessId
string
​
environment
enum<string>
Available options:
LIVE,
SANDBOX
​
timestamp
string<date-time>
​
data
object

Response

200

Acknowledge the event.