curl --request POST \
  --url https://api.lightspark.com/grid/2025-10-13/sandbox/cards/{id}/simulate/authorization_advice \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "cardTransactionId": "CardTransaction:019542f5-b3e7-1d02-0000-000000000100",
  "amount": 2000
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    cardTransactionId: 'CardTransaction:019542f5-b3e7-1d02-0000-000000000100',
    amount: 2000
  })
};

fetch('https://api.lightspark.com/grid/2025-10-13/sandbox/cards/{id}/simulate/authorization_advice', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

val client = OkHttpClient()

val mediaType = MediaType.parse("application/json")
val body = RequestBody.create(mediaType, "{\n  \"cardTransactionId\": \"CardTransaction:019542f5-b3e7-1d02-0000-000000000100\",\n  \"amount\": 2000\n}")
val request = Request.Builder()
  .url("https://api.lightspark.com/grid/2025-10-13/sandbox/cards/{id}/simulate/authorization_advice")
  .post(body)
  .addHeader("Authorization", "Basic <encoded-value>")
  .addHeader("Content-Type", "application/json")
  .build()

val response = client.newCall(request).execute()

{
  "issuerTransactionToken": "f3a1c2d4-5b6e-7890-abcd-ef0123456789"
}

{
  "status": 400,
  "message": "<string>",
  "details": {}
}

{
  "status": 401,
  "message": "<string>",
  "details": {}
}

{
  "status": 403,
  "message": "<string>",
  "details": {}
}

{
  "status": 404,
  "message": "<string>",
  "details": {}
}

{
  "status": 500,
  "message": "<string>",
  "details": {}
}