curl --request PUT \
  --url https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId} \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "targetIdempotencyKey": "<string>",
  "description": "<string>",
  "amount": 2,
  "customFields": {
    "customField1": "value1",
    "customField2": [
      "value2",
      "value3"
    ]
  }
}
'

import requests

url = "https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId}"

payload = {
    "targetIdempotencyKey": "<string>",
    "description": "<string>",
    "amount": 2,
    "customFields": {
        "customField1": "value1",
        "customField2": ["value2", "value3"]
    }
}
headers = {
    "X-API-KEY": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    targetIdempotencyKey: '<string>',
    description: '<string>',
    amount: 2,
    customFields: {customField1: 'value1', customField2: ['value2', 'value3']}
  })
};

fetch('https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'targetIdempotencyKey' => '<string>',
    'description' => '<string>',
    'amount' => 2,
    'customFields' => [
        'customField1' => 'value1',
        'customField2' => [
                'value2',
                'value3'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-KEY: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId}"

	payload := strings.NewReader("{\n  \"targetIdempotencyKey\": \"<string>\",\n  \"description\": \"<string>\",\n  \"amount\": 2,\n  \"customFields\": {\n    \"customField1\": \"value1\",\n    \"customField2\": [\n      \"value2\",\n      \"value3\"\n    ]\n  }\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("X-API-KEY", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.put("https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId}")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"targetIdempotencyKey\": \"<string>\",\n  \"description\": \"<string>\",\n  \"amount\": 2,\n  \"customFields\": {\n    \"customField1\": \"value1\",\n    \"customField2\": [\n      \"value2\",\n      \"value3\"\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.useaira.com/v1/invoices/{invoiceId}/discounts/{discountId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"targetIdempotencyKey\": \"<string>\",\n  \"description\": \"<string>\",\n  \"amount\": 2,\n  \"customFields\": {\n    \"customField1\": \"value1\",\n    \"customField2\": [\n      \"value2\",\n      \"value3\"\n    ]\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "target": "invoice",
  "targetIdempotencyKey": "<string>",
  "method": "fixed",
  "reason": "manual_discount",
  "description": "<string>",
  "amount": 2,
  "isActive": true,
  "customFields": {
    "customField1": "value1",
    "customField2": [
      "value2",
      "value3"
    ]
  }
}

{
  "message": "<string>",
  "code": "<string>",
  "details": {},
  "causations": [
    {
      "message": "<string>",
      "code": "<string>",
      "details": {}
    }
  ]
}

{
  "message": "<string>"
}