curl --request POST \
  --url https://api.loyalty.dog/v2/giftcards/programs/{programId}/cards/{cardId}/transactions/{transactionId}/refund \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": 1,
  "reason": "<string>",
  "posTransactionId": "<string>"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({amount: 1, reason: '<string>', posTransactionId: '<string>'})
};

fetch('https://api.loyalty.dog/v2/giftcards/programs/{programId}/cards/{cardId}/transactions/{transactionId}/refund', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.loyalty.dog/v2/giftcards/programs/{programId}/cards/{cardId}/transactions/{transactionId}/refund"

payload = {
    "amount": 1,
    "reason": "<string>",
    "posTransactionId": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "transactionId": "5eb7cf5a86d9755df3a6c593",
  "giftCardId": "5eb7cf5a86d9755df3a6c593",
  "refundedAmount": "<string>",
  "remainingBalance": "<string>",
  "success": true,
  "message": "<string>"
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}