Welcome to the RingCentral Community

This is my Code for getting token.

$code=$_REQUEST['code'];

$APPKEY="u8hj81KeQ9uQDyA1PBTTgw";

$req='https://platform.devtest.ringcentral.com/restapi/oauth/token';

$post = array (

'grant_type' => 'authorization_code',

'code' => $code ,

'redirect_uri' => 'http://localhost/token.php');

$ch = curl_init($req);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$apiKey = base64_encode($APPKEY);

curl_setopt($ch, CURLOPT_HTTPHEADER, array(

'Authorization: Basic ' . $apiKey,

'Accept: application/json',

'Content-Type: application/x-www-form-urlencoded'));

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post));

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

$response = curl_exec($ch);

curl_close($ch);

$r=json_decode($response, true);

And the Response is

array (size=3)    'error' => string 'invalid_client' (length=14)    'error_description' => string 'Invalid client: ' (length=16)    'errors' =>       array (size=1)        0 =>           array (size=3)            'errorCode' => string 'OAU-153' (length=7) 

'message' => string 'Invalid client: ' (length=16)

I am using the same Client ID for getting authorized Code.

Please Help me what is Wrong.