Credit an invoice

curl --request POST \
  --url https://api.alguna.io/invoices/{id}/credit-notes \
  --header 'Alguna-Version: <alguna-version>' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "line_items": [
    {
      "invoice_line_item_id": "ili_01H1VECT",
      "quantity": "2"
    }
  ]
}
'

import requests

url = "https://api.alguna.io/invoices/{id}/credit-notes"

payload = { "line_items": [
        {
            "invoice_line_item_id": "ili_01H1VECT",
            "quantity": "2"
        }
    ] }
headers = {
    "Alguna-Version": "<alguna-version>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Alguna-Version': '<alguna-version>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({line_items: [{invoice_line_item_id: 'ili_01H1VECT', quantity: '2'}]})
};

fetch('https://api.alguna.io/invoices/{id}/credit-notes', 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.alguna.io/invoices/{id}/credit-notes",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'line_items' => [
        [
                'invoice_line_item_id' => 'ili_01H1VECT',
                'quantity' => '2'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Alguna-Version: <alguna-version>",
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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.alguna.io/invoices/{id}/credit-notes"

	payload := strings.NewReader("{\n  \"line_items\": [\n    {\n      \"invoice_line_item_id\": \"ili_01H1VECT\",\n      \"quantity\": \"2\"\n    }\n  ]\n}")

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

	req.Header.Add("Alguna-Version", "<alguna-version>")
	req.Header.Add("Authorization", "Bearer <token>")
	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.post("https://api.alguna.io/invoices/{id}/credit-notes")
  .header("Alguna-Version", "<alguna-version>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"line_items\": [\n    {\n      \"invoice_line_item_id\": \"ili_01H1VECT\",\n      \"quantity\": \"2\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.alguna.io/invoices/{id}/credit-notes")

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

request = Net::HTTP::Post.new(url)
request["Alguna-Version"] = '<alguna-version>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"line_items\": [\n    {\n      \"invoice_line_item_id\": \"ili_01H1VECT\",\n      \"quantity\": \"2\"\n    }\n  ]\n}"

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

{
  "attachments": [
    {
      "file_url": "<string>",
      "title": "Credit Note PDF"
    }
  ],
  "created_at": "2026-04-01T10:00:00Z",
  "currency": "USD",
  "customer_id": "cust_01H1VECT",
  "description": "Overcharge credit",
  "external_reference": "<string>",
  "id": "cn_01H1VECT",
  "is_pdf_available": true,
  "line_items": [
    {
      "billing_period_end": "2026-01-31T23:59:59Z",
      "billing_period_start": "2026-01-01T00:00:00Z",
      "description": "Platform usage credit",
      "id": "cnli_01H1VECT",
      "is_editable": true,
      "quantity": "1",
      "total_price": "100.00",
      "unit_price": "100.00",
      "additional_description": "<string>",
      "invoice_line_item_id": "<string>",
      "product_id": "prod_01H1VECT",
      "tax_amount": "10.00",
      "tax_rate": "0.10"
    }
  ],
  "status": "draft",
  "subtotal": "100.00",
  "sync_enabled": true,
  "tax": "10.00",
  "total": "110.00",
  "updated_at": "2026-04-01T12:30:00Z",
  "accounting_credit_note_id": "<string>",
  "accounting_credit_note_url": "<string>",
  "accounting_integration_id": "<string>",
  "accounting_provider": "<string>",
  "apply_date": "2026-03-01T00:00:00Z",
  "billing_period_end": "2026-01-31T23:59:59Z",
  "billing_period_start": "2026-01-01T00:00:00Z",
  "credit_date": "2026-03-01T00:00:00Z",
  "invoice_id": "<string>",
  "last_refund_date": "2023-11-07T05:31:56Z",
  "last_refund_id": "<string>",
  "legal_entity_id": "<string>",
  "merchant_id": "mrch_01H8XGJWBWBAQ4PLwXYZ",
  "purchase_order_number": "<string>",
  "void_date": "2023-11-07T05:31:56Z"
}

{
  "detail": "<string>",
  "status": 123
}

{
  "detail": "<string>",
  "status": 123
}

{
  "detail": "<string>",
  "status": 123
}

{
  "detail": "<string>",
  "status": 123
}

{
  "detail": "<string>",
  "status": 123
}

{
  "detail": "<string>",
  "status": 123
}