curl --request POST \
  --url https://api.sandbox.z2pay.com/v1/transactions/{id}/refund \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "reason": "<string>"
}
'

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({reason: '<string>'})
};

fetch('https://api.sandbox.z2pay.com/v1/transactions/{id}/refund', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sandbox.z2pay.com/v1/transactions/{id}/refund"

payload = { "reason": "<string>" }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "refunds": [
    {
      "id": "rfd_dt8xoet16jhqxrgn76f0x25vg",
      "transactionId": "txn_raqtaj22an9s5dexc1vthopl8",
      "paymentId": "pay_k0fg3q4jjcbi56hdhbi7xlj5e",
      "amount": 19990,
      "currency": "BRL",
      "status": "refunded",
      "reason": "Solicitação do cliente",
      "requestedByType": "api",
      "paymentMethod": "credit_card",
      "customerId": "cust_lhsmn6ugmjotm5qvnunrr2hz1",
      "customerName": "Maria Silva",
      "customerEmail": "maria.silva@example.com",
      "customerDocument": "12345678909",
      "customerDocumentType": "cpf",
      "additionalInfo": {
        "checkoutLinkId": "chk_byd8p3p79re859jpkmr0j65n3"
      },
      "failureReason": null,
      "reviewedAt": null,
      "refundedAt": "2025-06-29T14:10:00.000Z",
      "createdAt": "2025-06-29T14:09:55.000Z",
      "updatedAt": "2025-06-29T14:10:00.000Z"
    }
  ],
  "processResults": [
    {
      "success": true,
      "refund": {
        "id": "rfd_dt8xoet16jhqxrgn76f0x25vg",
        "transactionId": "txn_raqtaj22an9s5dexc1vthopl8",
        "paymentId": "pay_k0fg3q4jjcbi56hdhbi7xlj5e",
        "amount": 19990,
        "currency": "BRL",
        "status": "refunded",
        "reason": "Solicitação do cliente",
        "requestedByType": "api",
        "paymentMethod": "credit_card",
        "customerId": "cust_lhsmn6ugmjotm5qvnunrr2hz1",
        "customerName": "Maria Silva",
        "customerEmail": "maria.silva@example.com",
        "customerDocument": "12345678909",
        "customerDocumentType": "cpf",
        "additionalInfo": {
          "checkoutLinkId": "chk_byd8p3p79re859jpkmr0j65n3"
        },
        "failureReason": null,
        "reviewedAt": null,
        "refundedAt": "2025-06-29T14:10:00.000Z",
        "createdAt": "2025-06-29T14:09:55.000Z",
        "updatedAt": "2025-06-29T14:10:00.000Z"
      },
      "message": "Refund processado com sucesso"
    }
  ]
}

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Validation failed",
    "issues": [
      {
        "path": "status",
        "message": "Status inválido. Valores aceitos: pending, waiting_payment, paid, refused, canceled, refunded"
      },
      {
        "path": "startDate",
        "message": "Data deve ser ISO 8601 com timezone (ex.: 2026-06-24T00:00:00Z)"
      }
    ]
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Invalid API key"
  }
}

{
  "error": {
    "code": "NOT_FOUND",
    "message": "Transaction not found"
  }
}

{
  "error": {
    "code": "CONFLICT",
    "message": "No refundable payment found"
  }
}

{
  "error": "Idempotency key already used with a different request body"
}