Invalid Client Error

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  • Question
  • Updated 9 months ago
  • (Edited)
Hi I keep getting the following response:

Authorization: Basic ******************************Content-Type: application/x-www-form-urlencoded;charset=UTF-8Content-Length: 73* upload completely sent off: 73 out of 73 bytes< HTTP/1.1 400 Bad Request* Server nginx/1.10.2 is not blacklisted< Server: nginx/1.10.2< Date: Thu, 22 Jun 2017 10:24:57 GMT< Content-Type: application/json;charset=utf-8< Transfer-Encoding: chunked< Connection: keep-alive< X-Application-Context: application:8080< Content-Language: en< WWW-Authenticate: Bearer realm="RingCentral REST API", error="invalid_client", error_description="Invalid client: "< RCRequestId: 0a67f30c-5735-11e7-a00b-005056bb26b9< AceRoutingKey: sjc11-c01-ace01.c83d65c2-46d3-11e7-ab8e-005056a73f60< X-Server-Name: sjc06-c01-hlb01< X-Request-Time: 0.010< X-Upstream-Server:< X-Upstream-Status: 400< X-Upstream-HTime: 0.010< X-Upstream-RTime: 1498127097.763< X-Upstream-CTime: 0.000< X-Tcpinfo: 1000, 500, 10, 28960< RoutingKey: SJC11P01
Here is the snippet I am using to try and authenticate...
	$headers = array();	$headers[] = 'Authorization: Basic 7he87Tb1TjWiy6L7waiCwg';	$headers[] = 'Content-Type: application/x-www-form-urlencoded;charset=UTF-8';	$curl_post_data = 'grant_type=password&username=[sandbox number]&extension=301&password=xxxxxx';			 	$service_url = '';    $curl = curl_init($service_url);			$fp = fopen('errorlog.txt', 'w');	curl_setopt($curl, CURLOPT_STDERR, $fp);	curl_setopt($curl, CURLOPT_VERBOSE, true);    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);	curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);	curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);    curl_setopt($curl, CURLOPT_POST, true);    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);	curl_setopt($curl, CURLOPT_POSTFIELDS, $curl_post_data);	$curl_response = curl_exec($curl);    curl_close($curl);    $resp = $curl_response;    $obj = json_decode($resp, true);

Any ideas why I should be getting invalid client??


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James Williams

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Posted 9 months ago

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AK, Official Rep

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Hi James,

Please do not expose your credentials while you post anything here!
As for the error it looks like your Basic <<Auth Header>> seems wrong ! Please keep in mind, the Authorization would be the form:

Authorization : Basic <<base64 Encode of appKey:appSecret>> 

base64 encode of appKey:  appSecret. You can use to get the base64 encode of appKey followed by a colon (:) followed by an appSecret

You can find your appKey and appSecret under your application in the Developer Portal:

You could take a look at our Getting Started Help Tutorial here:

If you are interested in using our Official SDK's, we have an Ringcentral-PHP SDK whihc you could take a look at. Kindly head over to our Github Page:
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James Williams

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Hi thanks for getting back to me, I'd forget about the base64... I'm now getting the following error 

"message": "In order to call this API endpoint, application needs to have [Accounts] permission",

when I try to navigate to

I've added the Read Accounts endpoint but still get the error...

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Anton Nikitin, Official Rep

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James, what API did you try to call? If you used GET method with this API then "ReadAccounts" should be enough.
My guess is that you use POST by mistake