Credit note API documentation

The Credit Note Feed API allows merchants to upload credit note data in real-time or in bulk. Credit note data flows automatically and securely into Lovat, enabling businesses to generate, manage, and track credit notes efficiently while maintaining compliance with tax regulations and accounting standards.

Terms and abbreviations

API – Application Programming Interface. A set of calls provided by the system for integration with external software products.
Merchant – The owner of an online store or business using the Lovat platform.
Customer – An individual or business entity who purchases goods or services from the merchant.
Credit Note – A commercial document issued by a seller to a buyer, indicating a reduction in the amount owed for previously issued invoices.
Token – A secret string used by the system to identify the merchant and authenticate API requests.
Line Item – Individual product or service entry in a credit note with quantity, unit price, and total.

Credit note data parameters

Parameter	Type/Example	Description	Validation
credit_note_number	String/”CN-2024-001″	Unique credit note identifier	Optional. Maximum 255 characters
customer_id	Integer/123	Existing customer ID in system	Optional. Must exist in customer database
customer_name	String/”Acme Corporation”	Customer business name	Required. Maximum 255 characters. Not empty
customer_email	String/”contact@acme.com”	Customer email address	Optional. Must contain ‘@’ if provided
customer_country	String/”USA”	Customer country code	Optional. ISO 3166-1 alpha-3 format (3 characters)
customer_tax_number	String/”123456789″	Customer tax/VAT number	Optional. Maximum 25 characters
customer_address	String/”123 Business St”	Customer address	Optional. Maximum 255 characters
credit_note_date	String/”2024-01-15″	Credit note creation date	Required. YYYY-MM-DD format
due_date	String/”2024-02-15″	Payment due date	Required. YYYY-MM-DD format
currency	String/”EUR”	Credit note currency	Optional. Default: “EUR”. Maximum 3 characters
status	String/”draft”	Credit note status	Required. Values: “draft”, “pending”, “sent”, “paid”
line_items	Array	List of credit note items	Required. At least one item required
subtotal	Float/1000.00	Sum before taxes and discounts	Required. Decimal with 2 places
total_tax	Float/220.00	Total tax amount	Required. Decimal with 2 places
total	Float/1220.00	Final credit note amount	Required. Decimal with 2 places
total_discount_amount	Float/50.00	Total discount amount	Required. Decimal with 2 places
supplier_tax_number	String/”987654321″	Supplier tax number	Optional. Maximum 25 characters
supplier_country	String/”USA”	Supplier country code	Optional. ISO 3166-1 alpha-3 format

Line item parameters

Parameter	Type/Example	Description	Validation
description	String/”Web Development”	Item description	Required. Maximum 255 characters
quantity	Float/2.0	Item quantity	Required. Positive number
unit_price	Float/500.00	Price per unit	Required. Positive number
is_taxable	Boolean/true	Whether item is taxable	Default: true

1. Bulk credit note upload

Description: Upload one or multiple credit notes to the platform in a single request.
Method: POST
URL: https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/{access_token}
Parameters:
Path parameters: access_token (required)
Body parameters: Array of credit note objects (JSON format)

Example requests

Credit note upload


curl -X POST \
"https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "credit_note_number": "CN-2024-001",
      "customer_name": "Acme Corporation",
      "customer_email": "contact@acme.com",
      "customer_country": "USA",
      "customer_tax_number": "123456789",
      "customer_address": "123 Business Ave, New York, NY 10001",
      "credit_note_date": "2024-01-15",
      "due_date": "2024-02-15",
      "currency": "USD",
      "status": "draft",
      "line_items": [
        {
          "description": "Web Development Services Refund",
          "quantity": 10,
          "unit_price": 75.00,
          "tax": true
        },
        {
          "description": "Domain Registration Refund",
          "quantity": 1,
          "unit_price": 15.00,
          "tax": false
        }
      ],
      "subtotal": 765.00,
      "total_tax": 168.30,
      "total": 933.30,
      "total_discount_amount": 0.00,
      "supplier_company_name": "Tech Solutions Inc",
      "supplier_address": "456 Tech Street, San Francisco, CA 94102",
      "supplier_email": "billing@techsolutions.com",
      "supplier_tax_number": "987654321",
      "supplier_country": "USA"
    },
    {
      "credit_note_number": "CN-2024-002",
      "customer_name": "Tech Solutions Ltd",
      "customer_email": "info@techsolutions.com",
      "customer_country": "GBR",
      "customer_tax_number": "GB123456789",
      "customer_address": "456 Tech Street, London, SW1A 1AA",
      "credit_note_date": "2024-01-16",
      "due_date": "2024-02-16",
      "currency": "EUR",
      "status": "draft",
      "line_items": [
        {
          "description": "Software License Refund",
          "quantity": 1,
          "unit_price": 299.00,
          "tax": true
        }
      ],
      "subtotal": 299.00,
      "total_tax": 65.78,
      "total": 364.78,
      "total_discount_amount": 0.00,
      "supplier_company_name": "Tech Solutions Inc",
      "supplier_address": "456 Tech Street, San Francisco, CA 94102",
      "supplier_email": "billing@techsolutions.com",
      "supplier_tax_number": "987654321",
      "supplier_country": "USA"
   }
  ]'


import requests
import json

url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token"
headers = {"Content-Type": "application/json"}

credit_notes = [
    {
        "credit_note_number": "CN-2024-001",
        "customer_name": "Acme Corporation",
        "customer_email": "contact@acme.com",
        "customer_country": "USA",
        "customer_tax_number": "123456789",
        "customer_address": "123 Business Ave, New York, NY 10001",
        "credit_note_date": "2024-01-15",
        "due_date": "2024-02-15",
        "currency": "USD",
        "status": "draft",
        "line_items": [
            {
                "description": "Web Development Services Refund",
                "quantity": 10,
                "unit_price": 75.00,
                "tax": True
            },
            {
                "description": "Domain Registration Refund",
                "quantity": 1,
                "unit_price": 15.00,
                "tax": False
            }
        ],
        "subtotal": 765.00,
        "total_tax": 168.30,
        "total": 933.30,
        "total_discount_amount": 0.00,
        "supplier_company_name": "Tech Solutions Inc",
        "supplier_address": "456 Tech Street, San Francisco, CA 94102",
       "supplier_email": "billing@techsolutions.com",
        "supplier_tax_number": "987654321",
        "supplier_country": "USA"
    }
]

response = requests.post(url, headers=headers, data=json.dumps(credit_notes))
print(response.json())


require 'net/http'
require 'uri'
require 'json'

url = URI("https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

headers = { "Content-Type" => "application/json" }

credit_notes = [
  {
    "credit_note_number" => "CN-2024-001",
    "customer_name" => "Acme Corporation",
    "customer_email" => "contact@acme.com",
    "customer_country" => "USA",
    "customer_tax_number" => "123456789",
    "customer_address" => "123 Business Ave, New York, NY 10001",
    "credit_note_date" => "2024-01-15",
    "due_date" => "2024-02-15",
    "currency" => "USD",
    "status" => "draft",
    "line_items" => [
      {
        "description" => "Web Development Services Refund",
        "quantity" => 10,
        "unit_price" => 75.00,
        "tax" => true
      },
      {
        "description" => "Domain Registration Refund",
        "quantity" => 1,
        "unit_price" => 15.00,
        "tax" => false
      }
    ],
    "subtotal" => 765.00,
    "total_tax" => 168.30,
    "total" => 933.30,
    "total_discount_amount" => 0.00,
    "supplier_company_name" => "Tech Solutions Inc",
    "supplier_address" => "456 Tech Street, San Francisco, CA 94102",
    "supplier_email" => "billing@techsolutions.com",
    "supplier_tax_number" => "987654321",
    "supplier_country" => "USA"
  }
]

request = Net::HTTP::Post.new(url, headers)
request.body = credit_notes.to_json

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

<?php
$url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token";

$credit_notes = [
    [
        "credit_note_number" => "CN-2024-001",
        "customer_name" => "Acme Corporation",
        "customer_email" => "contact@acme.com",
        "customer_country" => "USA",
        "customer_tax_number" => "123456789",
        "customer_address" => "123 Business Ave, New York, NY 10001",
        "credit_note_date" => "2024-01-15",
        "due_date" => "2024-02-15",
        "currency" => "USD",
        "status" => "draft",
        "line_items" => [
            [
                "description" => "Web Development Services Refund",
                "quantity" => 10,
                "unit_price" => 75.00,
                "tax" => true
            ],
            [
                "description" => "Domain Registration Refund",
                "quantity" => 1,
                "unit_price" => 15.00,
                "tax" => false
            ]
        ],
        "subtotal" => 765.00,
        "total_tax" => 168.30,
        "total" => 933.30,
        "total_discount_amount" => 0.00,
        "supplier_company_name" => "Tech Solutions Inc",
        "supplier_address" => "456 Tech Street, San Francisco, CA 94102",
        "supplier_email" => "billing@techsolutions.com",
        "supplier_tax_number" => "987654321",
        "supplier_country" => "USA"
    ]
];

$options = [
    "http" => [
        "header"  => "Content-Type: application/json\r\n",
        "method"  => "POST",
        "content" => json_encode($credit_notes),
    ]
];

$context  = stream_context_create($options);
$result = file_get_contents($url, false, $context);

if ($result === FALSE) {
    die("Error sending request");
}

echo $result;
?>


const fetch = require("node-fetch");

const url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token";
const credit_notes = [
  {
    credit_note_number: "CN-2024-001",
    customer_name: "Acme Corporation",
    customer_email: "contact@acme.com",
    customer_country: "USA",
    customer_tax_number: "123456789",
    customer_address: "123 Business Ave, New York, NY 10001",
    credit_note_date: "2024-01-15",
    due_date: "2024-02-15",
    currency: "USD",
    status: "draft",
    line_items: [
      {
        description: "Web Development Services Refund",
        quantity: 10,
        unit_price: 75.00,
        tax: true
      },
      {
        description: "Domain Registration Refund",
        quantity: 1,
        unit_price: 15.00,
        tax: false
      }
    ],
    subtotal: 765.00,
    total_tax: 168.30,
    total: 933.30,
    total_discount_amount: 0.00,
    supplier_company_name: "Tech Solutions Inc",
    supplier_address: "456 Tech Street, San Francisco, CA 94102",
    supplier_email: "billing@techsolutions.com",
    supplier_tax_number: "987654321",
    supplier_country: "USA"
  }
];

fetch(url, {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify(credit_notes),
})
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error("Error:", err));


using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program {
    static async Task Main() {
        var url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token";
        var client = new HttpClient();

        var credit_notes = new[] {
            new {
                credit_note_number = "CN-2024-001",
                customer_name = "Acme Corporation",
                customer_email = "contact@acme.com",
                customer_country = "USA",
                customer_tax_number = "123456789",
                customer_address = "123 Business Ave, New York, NY 10001",
                credit_note_date = "2024-01-15",
                due_date = "2024-02-15",
                currency = "USD",
                status = "draft",
                line_items = new[] {
                    new {
                        description = "Web Development Services Refund",
                        quantity = 10,
                        unit_price = 75.00,
                        tax = true
                    },
                    new {
                        description = "Domain Registration Refund",
                        quantity = 1,
                        unit_price = 15.00,
                        tax = false
                    }
                },
                subtotal = 765.00,
                total_tax = 168.30,
                total = 933.30,
                total_discount_amount = 0.00,
                supplier_company_name = "Tech Solutions Inc",
                supplier_address = "456 Tech Street, San Francisco, CA 94102",
                supplier_email = "billing@techsolutions.com",
                supplier_tax_number = "987654321",
                supplier_country = "USA"
            }
        };

        var json = Newtonsoft.Json.JsonConvert.SerializeObject(credit_notes);
        var content = new StringContent(json, Encoding.UTF8, "application/json");

        var response = await client.PostAsync(url, content);
        string responseBody = await response.Content.ReadAsStringAsync();

        Console.WriteLine(responseBody);
    }
}


import java.net.http.*;
import java.net.URI;
import java.nio.charset.StandardCharsets;

public class BulkCreditNoteUpload {
    public static void main(String[] args) throws Exception {
        String url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token";

        String json = "[{\"credit_note_number\":\"CN-2024-001\",\"customer_name\":\"Acme Corporation\",\"customer_email\":\"contact@acme.com\",\"customer_country\":\"USA\",\"customer_tax_number\":\"123456789\",\"customer_address\":\"123 Business Ave, New York, NY 10001\",\"credit_note_date\":\"2024-01-15\",\"due_date\":\"2024-02-15\",\"currency\":\"USD\",\"status\":\"draft\",\"line_items\":[{\"description\":\"Web Development Services Refund\",\"quantity\":10,\"unit_price\":75.00,\"tax\":true},{\"description\":\"Domain Registration Refund\",\"quantity\":1,\"unit_price\":15.00,\"tax\":false}],\"subtotal\":765.00,\"total_tax\":168.30,\"total\":933.30,\"total_discount_amount\":0.00,\"supplier_company_name\":\"Tech Solutions Inc\",\"supplier_address\":\"456 Tech Street, San Francisco, CA 94102\",\"supplier_email\":\"billing@techsolutions.com\",\"supplier_tax_number\":\"987654321\",\"supplier_country\":\"USA\"}]";

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(url))
            .header("Content-Type", "application/json")
            .POST(HttpRequest.BodyPublishers.ofString(json, StandardCharsets.UTF_8))
            .build();

        HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}


package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "net/http"
    "io/ioutil"
)

func main() {
    url := "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token"

    credit_notes := []map[string]interface{}{
        {
            "credit_note_number":     "CN-2024-001",
            "customer_name":          "Acme Corporation",
            "customer_email":         "contact@acme.com",
            "customer_country":       "USA",
            "customer_tax_number":    "123456789",
            "customer_address":       "123 Business Ave, New York, NY 10001",
            "credit_note_date":       "2024-01-15",
            "due_date":               "2024-02-15",
            "currency":               "USD",
            "status":                 "draft",
            "line_items": []map[string]interface{}{
                {
                    "description": "Web Development Services Refund",
                    "quantity":     10,
                    "unit_price":   75.00,
                    "tax":          true,
                },
                {
                    "description": "Domain Registration Refund",
                    "quantity":     1,
                    "unit_price":   15.00,
                    "tax":          false,
                },
            },
            "subtotal":               765.00,
            "total_tax":              168.30,
            "total":                  933.30,
            "total_discount_amount":  0.00,
            "supplier_company_name":  "Tech Solutions Inc",
            "supplier_address":       "456 Tech Street, San Francisco, CA 94102",
            "supplier_email":         "billing@techsolutions.com",
            "supplier_tax_number":    "987654321",
            "supplier_country":       "USA",
        },
    }

    body, _ := json.Marshal(credit_notes)
    resp, err := http.Post(url, "application/json", bytes.NewBuffer(body))
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    responseData, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(responseData))
}

Example response

Credit note upload response

Success response:

{
  "status": "done",
  "results": [
    {
      "index": 0,
      "status": "success",
      "credit_note_id": 5290,
      "credit_note_number": "CN-2024-001",
      "total": "933.3"
    }
  ]
}

2. Credit note update

Description: Update an existing credit note by its unique identifier. Supports partial updates – only provided fields will be modified.
Method: PUT
URL: https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/{access_token}/{credit_note_id}
Parameters:
– Path parameters:
access_token (required) – Authentication token
credit_note_id (required) – Unique credit note identifier
– Body parameters: Credit note update object (JSON format)

Example requests

Update credit note by ID


curl -X PUT \
"https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234" \
  -H "Content-Type: application/json" \
  -d '{
    "credit_note_date": "2024-01-20",
    "due_date": "2024-02-20",
    "status": "sent",
    "line_items": [
      {
        "description": "Updated Web Development Services Refund",
        "quantity": 15,
        "unit_price": 75.00,
        "tax": true
      },
      {
        "description": "Additional Consulting Refund",
        "quantity": 5,
        "unit_price": 100.00,
        "tax": true
      }
    ],
    "subtotal": 1625.00,
    "total_tax": 357.50,
    "total": 1982.50,
    "total_discount_amount": 0.00
  }'


import requests
import json

url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234"
headers = {"Content-Type": "application/json"}

update_data = {
    "credit_note_date": "2024-01-20",
    "due_date": "2024-02-20",
    "status": "sent",
    "line_items": [
        {
            "description": "Updated Web Development Services Refund",
            "quantity": 15,
            "unit_price": 75.00,
            "tax": True
        },
        {
            "description": "Additional Consulting Refund",
            "quantity": 5,
            "unit_price": 100.00,
            "tax": True
        }
    ],
    "subtotal": 1625.00,
    "total_tax": 357.50,
    "total": 1982.50,
    "total_discount_amount": 0.00
}

response = requests.put(url, headers=headers, data=json.dumps(update_data))
print(response.json())


require 'net/http'
require 'uri'
require 'json'

url = URI("https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

headers = { "Content-Type" => "application/json" }

update_data = {
  "credit_note_date" => "2024-01-20",
  "due_date" => "2024-02-20",
  "status" => "sent",
  "line_items" => [
    {
      "description" => "Updated Web Development Services Refund",
      "quantity" => 15,
      "unit_price" => 75.00,
      "tax" => true
    },
    {
      "description" => "Additional Consulting Refund",
      "quantity" => 5,
      "unit_price" => 100.00,
      "tax" => true
    }
  ],
  "subtotal" => 1625.00,
  "total_tax" => 357.50,
  "total" => 1982.50,
  "total_discount_amount" => 0.00
}
request = Net::HTTP::Put.new(url, headers)
request.body = update_data.to_json

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

<?php
$url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234";

$update_data = [
    "credit_note_date" => "2024-01-20",
    "due_date" => "2024-02-20",
    "status" => "sent",
    "line_items" => [
        [
            "description" => "Updated Web Development Services Refund",
            "quantity" => 15,
            "unit_price" => 75.00,
            "tax" => true
        ],
        [
            "description" => "Additional Consulting Refund",
            "quantity" => 5,
            "unit_price" => 100.00,
            "tax" => true
        ]
    ],
    "subtotal" => 1625.00,
    "total_tax" => 357.50,
    "total" => 1982.50,
    "total_discount_amount" => 0.00
];

$options = [
    "http" => [
        "header"  => "Content-Type: application/json\r\n",
        "method"  => "PUT",
        "content" => json_encode($update_data),
    ]
];

$context  = stream_context_create($options);
$result = file_get_contents($url, false, $context);

if ($result === FALSE) {
    die("Error sending request");
}

echo $result;
?>


const fetch = require("node-fetch");

const url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234";
const update_data = {
  credit_note_date: "2024-01-20",
  due_date: "2024-02-20",
  status: "sent",
  line_items: [
    {
      description: "Updated Web Development Services Refund",
      quantity: 15,
      unit_price: 75.00,
      tax: true
    },
    {
      description: "Additional Consulting Refund",
      quantity: 5,
      unit_price: 100.00,
      tax: true
    }
  ],
  subtotal: 1625.00,
  total_tax: 357.50,
  total: 1982.50,
  total_discount_amount: 0.00
};

fetch(url, {
  method: "PUT",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify(update_data),
})
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error("Error:", err));


using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program {
    static async Task Main() {
        var url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234";
        var client = new HttpClient();

        var update_data = new {
            credit_note_date = "2024-01-20",
            due_date = "2024-02-20",
            status = "sent",
            line_items = new[] {
                new {
                    description = "Updated Web Development Services Refund",
                    quantity = 15,
                    unit_price = 75.00,
                    tax = true
                },
                new {
                    description = "Additional Consulting Refund",
                    quantity = 5,
                    unit_price = 100.00,
                    tax = true
                }
            },
            subtotal = 1625.00,
            total_tax = 357.50,
            total = 1982.50,
            total_discount_amount = 0.00
        };

        var json = Newtonsoft.Json.JsonConvert.SerializeObject(update_data);
        var content = new StringContent(json, Encoding.UTF8, "application/json");

        var response = await client.PutAsync(url, content);
        string responseBody = await response.Content.ReadAsStringAsync();

        Console.WriteLine(responseBody);
    }
}


import java.net.http.*;
import java.net.URI;
import java.nio.charset.StandardCharsets;

public class UpdateCreditNote {
    public static void main(String[] args) throws Exception {
        String url = "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234";

        String json = "{\"credit_note_date\":\"2024-01-20\",\"due_date\":\"2024-02-20\",\"status\":\"sent\",\"line_items\":[{\"description\":\"Updated Web Development Services Refund\",\"quantity\":15,\"unit_price\":75.00,\"tax\":true},{\"description\":\"Additional Consulting Refund\",\"quantity\":5,\"unit_price\":100.00,\"tax\":true}],\"subtotal\":1625.00,\"total_tax\":357.50,\"total\":1982.50,\"total_discount_amount\":0.00}";

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(url))
            .header("Content-Type", "application/json")
            .PUT(HttpRequest.BodyPublishers.ofString(json, StandardCharsets.UTF_8))
            .build();

        HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}


package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "net/http"
    "io/ioutil"
)

func main() {
    url := "https://invoice.vatcompliance.co/api/1/app/l_invoice/credit_notes/your-access-token/1234"

    update_data := map[string]interface{}{
        "credit_note_date": "2024-01-20",
        "due_date":         "2024-02-20",
        "status":           "sent",
        "line_items": []map[string]interface{}{
            {
                "description": "Updated Web Development Services Refund",
                "quantity":     15,
                "unit_price":   75.00,
                "tax":          true,
            },
            {
                "description": "Additional Consulting Refund",
                "quantity":     5,
                "unit_price":   100.00,
                "tax":          true,
            },
        },
        "subtotal":              1625.00,
        "total_tax":             357.50,
   "total":                 1982.50,
        "total_discount_amount": 0.00,
    }

    body, _ := json.Marshal(update_data)
    req, _ := http.NewRequest("PUT", url, bytes.NewBuffer(body))
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    responseData, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(responseData))
}

Example responses

Update credit note response
Success response

{
  "status": "done",
  "results": [
    {
      "index": 0,
      "status": "success",
      "credit_note_id": 5291,
      "credit_note_number": "CN-2025-001",
      "total": "245.0"
    }
  ]
}

Limitations and best practices

Rate Limiting: Maximum 100 requests per minute per access token
Partial Updates: Only provided fields will be updated, others remain unchanged
Data Validation: All update data is validated before processing
Line Items: If updating line items, must provide complete new list
Date Format: All dates must be in YYYY-MM-DD format
Decimal Precision: All monetary values support 2 decimal places