OAuth error - BAD_CLIENT_ID

Develop, Build & Integrate APIs & Integrations
1

Hi!

I’m using a developer account to set up an app for internal use with our portal.
However, I can’t seem to get the OAuth authentication working, as it always returns the following error:

“status”:“BAD_CLIENT_ID”,“message”:“missing or unknown client id”

Following is my PHP code to send the request:

$CLIENT_ID = “fc7a3a6-354b-4db7-xxxx-xxxxxxxxxxxx”;
$CLIENT_SECRET = “ae468672-c3f0-41cf-xxxx-xxxxxxxxxxxx”;
$REDIRECT_URI = “someurl.com”;

$code=$_GET[“code”];

$data = array(
‘grant_type’ => ‘authorization_code’,
‘client_id’ => $CLIENT_ID,
‘client_secret’ => $CLIENT_SECRET,
‘redirect_uri’ => $REDIRECT_URI,
‘code’ => $code);

$ch = curl_init(‘https://api.hubapi.com/oauth/v1/token’);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array( ‘Content-Type: application/x-www-form-urlencoded;charset=utf-8’));
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));

$result = curl_exec($ch);

I’ve read a bunch of similar topics on this forum, but can’t seem to find what I’m doing wrong here…?

2

Hi @raymond, Happy to help. To troubleshoot effectively, though, I’ll need a bit more information. Would you share:

  1. Your APP ID.
  2. The portal ID you’re trying to request access to.
  3. The full error you received from HubSpot, including the status code.
3

Hi Connor,

Thanks for your reply. Strangely, the exact same script does seem to work from a different domain…

Consider the problem solved