> ## Documentation Index
> Fetch the complete documentation index at: https://lago-ftr-wallet-improvements.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Update a credit note

> This endpoint updates an existing credit note.

<RequestExample>
  ```bash cURL
  LAGO_URL="https://api.getlago.com"
  API_KEY="__YOUR_API_KEY__"

  curl --location --request PUT "$LAGO_URL/api/v1/credit_notes/:lago_credit_note_id" \
  --header "Authorization: Bearer $API_KEY" \
  --header 'Content-Type: application/json' \
  --data-raw '{
    "credit_note": {
      "refund_status": "refunded",
    }
  }'
  ```

  ```python Python
  from lago_python_client.client import Client
  from lago_python_client.exceptions import LagoApiError
  from lago_python_client.models import CreditNoteUpdate

  credit_note_id = "credit-note-id"
  credit_note_update = CreditNoteUpdate(refund_status='pending')

  try:
      client.credit_notes.update(credit_note_update, credit_note_id)
  except LagoApiError as e:
      repair_broken_state(e)  # do something on error or raise your own exception
  ```

  ```ruby Ruby
  require 'lago-ruby-client'

  client = Lago::Api::Client.new({api_key: '__YOUR_API_KEY__'})

  client.credit_note.update(
    { refund_status: 'refunded' },
    '__LAGO_CREDIT_NOTE_ID__',
  )
  ```

  ```js Javascript
  await client.creditNotes.updateCreditNote("credit-note-id", {
    credit_note: {
      refund_status: "pending",
    },
  });
  ```

  ```go Go
  import "fmt"
  import "github.com/getlago/lago-go-client"

  func main() {
  lagoClient := lago.New().SetApiKey("__YOUR_API_KEY__")

  creditNoteUpdateInput := &lago.CreditNoteUpdateInput{
      LagoID:       "lago-credit-note-id",
      RefundStatus: lago.CreditNoteReasonOther,
  }

  creditNote, err := lagoClient.CreditNote().Update(creditNoteInput)
  if err != nil {
      // Error is *lago.Error
      panic(err)
  }

  // creditNote is *lago.CreditNote
  fmt.Println(creditNote)
  }
  ```

  ```csharp C#
  using System.Collections.Generic;
  using System.Diagnostics;
  using Org.OpenAPITools.Api;
  using Org.OpenAPITools.Client;
  using Org.OpenAPITools.Model;

  namespace Example
  {
    public class UpdateCreditNoteExample
    {
        public static void Main()
        {
            Configuration.Default.BasePath = "https://api.getlago.com/api/v1";
            // Configure HTTP bearer authorization: bearerAuth
            Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";

            var apiInstance = new CreditNotesApi(Configuration.Default);
            var id = "12345";  // string | Id of the existing credit note
            var creditNoteUpdateInput = new CreditNoteUpdateInput(); // CreditNoteUpdateInput | Update an existing credit note

            try
            {
                // Update an existing credit note
                CreditNote result = apiInstance.UpdateCreditNote(id, creditNoteUpdateInput);
                Debug.WriteLine(result);
            }
            catch (ApiException e)
            {
                Debug.Print("Exception when calling CreditNotesApi.UpdateCreditNote: " + e.Message );
                Debug.Print("Status Code: "+ e.ErrorCode);
                Debug.Print(e.StackTrace);
            }
        }
    }
  }
  ```

  ```php PHP
  <?php
  require_once(__DIR__ . '/vendor/autoload.php');


  // Configure Bearer authorization: bearerAuth
  $config = OpenAPI\Client\Configuration::getDefaultConfiguration()->setAccessToken('YOUR_ACCESS_TOKEN');


  $apiInstance = new OpenAPI\Client\Api\CreditNotesApi(
    // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
    // This is optional, `GuzzleHttp\Client` will be used as default.
    new GuzzleHttp\Client(),
    $config
  );
  $id = "12345"; // string | Id of the existing credit note
  $credit_note_update_input = new \OpenAPI\Client\Model\CreditNoteUpdateInput(); // \OpenAPI\Client\Model\CreditNoteUpdateInput | Update an existing credit note

  try {
    $result = $apiInstance->updateCreditNote($id, $credit_note_update_input);
    print_r($result);
  } catch (Exception $e) {
    echo 'Exception when calling CreditNotesApi->updateCreditNote: ', $e->getMessage(), PHP_EOL;
  }
  ```
</RequestExample>