curl --request POST \
  --url https://sandbox-api.sakawave.example/v1/cards/{cardId}/freeze \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "externalReference": "card_freeze_20260814_001"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({externalReference: 'card_freeze_20260814_001'})
};

fetch('https://sandbox-api.sakawave.example/v1/cards/{cardId}/freeze', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://sandbox-api.sakawave.example/v1/cards/{cardId}/freeze"

payload = { "externalReference": "card_freeze_20260814_001" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "01K2Z3AB4S5T6V7W8XYZABCDEF",
  "label": "Ada travel card",
  "type": "virtual",
  "brand": "mastercard",
  "currency": "USD",
  "status": "frozen",
  "maskedPan": "•••• •••• •••• 4242",
  "expiryMonth": 8,
  "expiryYear": 2028,
  "holder": {
    "type": "customer",
    "id": "01K2Z3AB4C5D6E7F8G9HJKMNPQ",
    "name": "Ada Okafor"
  },
  "balance": "5000",
  "balanceFormatted": "50.00",
  "spendingControls": {
    "transactionAmountLimit": "2000",
    "dailyAmountLimit": "5000",
    "dailyTransactionCount": 10
  },
  "operations": [
    {
      "id": "01K2Z3AB4R5S6T7V8WXYZABCDE",
      "cardId": "01K2Z3AB4S5T6V7W8XYZABCDEF",
      "type": "issuance",
      "status": "completed",
      "sourceCurrency": "NGN",
      "destinationCurrency": "USD",
      "sourceAmount": "8000000",
      "destinationAmount": "5000",
      "failureCode": null,
      "failureReason": null,
      "completedAt": "2026-08-14T09:12:00.000Z",
      "createdAt": "2026-08-14T09:11:40.000Z",
      "updatedAt": "2026-08-14T09:12:00.000Z"
    }
  ],
  "createdAt": "2026-08-14T09:11:40.000Z",
  "updatedAt": "2026-08-14T09:12:00.000Z"
}

{
  "statusCode": 400,
  "message": "Must be a valid identifier.",
  "code": "validation_failed",
  "errors": [
    {
      "message": "Must be a valid identifier.",
      "field": "accountId",
      "code": "custom",
      "path": [
        "accountId"
      ]
    }
  ]
}

{
  "statusCode": 401,
  "code": "INVALID_API_KEY",
  "message": "Invalid or inactive API credentials."
}

{
  "statusCode": 404,
  "code": "resource_not_found",
  "message": "Resource not found."
}

{
  "statusCode": 409,
  "code": "resource_conflict",
  "message": "The request conflicts with the current resource state."
}

{
  "statusCode": 429,
  "message": "Too many API requests. Try again later.",
  "code": "api_key_rate_limit_exceeded",
  "retryAfterSeconds": 17
}

{
  "statusCode": 500,
  "code": "internal_server_error",
  "message": "An unexpected error occurred."
}

{
  "statusCode": 503,
  "code": "provider_unavailable",
  "message": "We could not issue an account number just now. Try again shortly."
}