curl --request POST \
  --url https://aropay.aro.media/api/v1/transfer/letter/{id}/void \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "acknowledgeMailed": true
}
'

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

fetch('https://aropay.aro.media/api/v1/transfer/letter/{id}/void', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://aropay.aro.media/api/v1/transfer/letter/{id}/void"

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

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

print(response.text)

{
  "ok": true,
  "data": {
    "letter": {
      "id": "cklet0001abcd",
      "status": "DRAFT",
      "chainId": 11155111,
      "amount": "<string>",
      "token": "cAROUSD",
      "amountVisibility": "sealed",
      "memo": "<string>",
      "recipient": {
        "name": "<string>",
        "address": {
          "line1": "<string>",
          "line2": "<string>",
          "landmark": "<string>",
          "city": "<string>",
          "region": "<string>",
          "postal": "<string>",
          "country": "NG",
          "countryName": "Nigeria"
        }
      },
      "isDomestic": true,
      "expiresAt": "2023-11-07T05:31:56Z",
      "sender": {
        "walletId": "<string>",
        "address": "<string>"
      },
      "claimCode": "<string>",
      "claimUrl": "<string>",
      "pdfUrl": "<string>",
      "escrow": {
        "transactionId": "cktxn0005abcd",
        "txHash": "<string>",
        "explorerUrl": "<string>",
        "status": "PENDING",
        "verified": true
      },
      "claim": {
        "transactionId": "cktxn0005abcd",
        "txHash": "<string>",
        "explorerUrl": "<string>",
        "status": "PENDING",
        "verified": true,
        "claimedAt": "2023-11-07T05:31:56Z",
        "walletAddress": "<string>"
      },
      "refund": {
        "transactionId": "cktxn0005abcd",
        "txHash": "<string>",
        "explorerUrl": "<string>",
        "status": "PENDING",
        "verified": true,
        "reason": "voided"
      },
      "mail": {
        "provider": "lob",
        "providerId": "<string>",
        "deliveryMethod": "standard",
        "status": "<string>",
        "trackingNumber": "<string>",
        "expectedDeliveryDate": "<string>",
        "mailedAt": "2023-11-07T05:31:56Z",
        "testMode": true
      },
      "needsReview": true,
      "error": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  }
}

{
  "ok": false,
  "error": {
    "code": "void_requires_acknowledgement",
    "message": "This letter has been mailed. Send acknowledgeMailed true to void it anyway."
  }
}

{
  "ok": false,
  "error": {
    "code": "invalid_api_key",
    "message": "Invalid API key."
  }
}

{
  "ok": false,
  "error": {
    "code": "account_disabled",
    "message": "This account is disabled."
  }
}

{
  "ok": false,
  "error": {
    "code": "letter_not_found",
    "message": "Letter not found."
  }
}

{
  "ok": false,
  "error": {
    "code": "already_claimed",
    "message": "This letter has already been claimed."
  }
}

{
  "ok": false,
  "error": {
    "code": "rate_limited",
    "message": "Too many requests. Try again shortly."
  }
}

{
  "ok": false,
  "error": {
    "code": "internal_error",
    "message": "An unexpected error occurred."
  }
}