creating an invoice using OAuth2 in xero

I am following along with the code samples provided here – https://github.com/XeroAPI/xero-php-oauth2/blob/master/docs/Api/AccountingApi.md#createInvoice

However, i am always receiving the following error message:

“ErrorNumber”: 17,

“Type”: “NoDataProcessedException”,

“Message”: “No data has been processed for this endpoint. This endpoint is expecting Invoice data to be specifed in the request body.”

Any ideas why this is the case.

I have added quotes around the $invoice data

Code below:

<?php
ini_set('display_errors', 'On');
require 'vendor/autoload.php';
require_once('storage.php');

// Storage Classe uses sessions for storing token > extend to your DB of choice
$storage = new StorageClass();
$xeroTenantId = (string)$storage->getSession()['tenant_id'];

if ($storage->getHasExpired()) {
$provider = new LeagueOAuth2ClientProviderGenericProvider([
  'clientId'                => 'xxx',   
  'clientSecret'            => 'xxx-QOnb_kvBiQEb',
  'redirectUri'             => 'http://localhost/xero/callback.php',
  'urlAuthorize'            => 'https://login.xero.com/identity/connect/authorize',
  'urlAccessToken'          => 'https://identity.xero.com/connect/token',
  'urlResourceOwnerDetails' => 'https://api.xero.com/api.xro/2.0/Organisation'
]);

$newAccessToken = $provider->getAccessToken('refresh_token', [
  'refresh_token' => $storage->getRefreshToken()
]);

// Save my token, expiration and refresh token
$storage->setToken(
  $newAccessToken->getToken(),
  $newAccessToken->getExpires(), 
  $xeroTenantId,
  $newAccessToken->getRefreshToken()
);
}

$config = XeroAPIXeroPHPConfiguration::getDefaultConfiguration()->setAccessToken( (string)$storage->getSession()['token'] );
$config->setHost("https://api.xero.com/api.xro/2.0");        

$apiInstance = new XeroAPIXeroPHPApiAccountingApi(
  new GuzzleHttpClient(),
  $config
);

$invoices = '{
            "Invoices": [{
              "Type": "ACCREC",
              "Contact": {
                "Name": "David Camerotto"
              },
              "LineItems": [{
                "Description": "Deposit for VBA Course",
                "Quantity": 1.0,
                "UnitAmount": 200.0,
                "AccountCode": "200",
                "TaxType": "NONE",
                "LineAmount": 200.0
              }],
              "Date": "2019-12-11",
              "DueDate": "2019-12-21",
              "Reference": "Website Design",
              "Status": "AUTHORISED"
            }]
          }';

$summarize_errors = True; 


try {
  $result = $apiInstance->createInvoices($xeroTenantId, $invoices, $summarize_errors);
  print_r($result);
} catch (Exception $e) {
  echo 'Exception when calling AccountingApi->createInvoice: ', $e->getMessage(), PHP_EOL;
  var_dump($e);
}



?>

Answer

If you take a look at the example again you’ll find that you’re building up your $invoice variable incorrectly and so when the SDK sends through the $invoice variable to the API it’s doing its serialization incorrectly leaving the request body unusable by the API.

In your code you’re building the $invoice variable as a string whereas the example is building the variable as an object. If you try build your variable in the same way, it should work.