I have another application which I need to call and they are using OAuth 1.0. now I am calling their system endpoint, I have client id and client secret only.

Do I need to generate token also?

because when I tested on Postman its working fine with just giving endpoint url, client id and client secret.

Can anyone help me with samples?

I am getting bad request 400 as a response...


    HttpResponse res = new HttpResponse();

        try {
            Http h = new Http();
            String authorizationHeader = '&client_Id='+clientId+'&client_secret='+clientSecret;               

            HttpRequest req = new HttpRequest();
            req.setHeader('Authorization', authorizationHeader);                
            req.setHeader('Content-type', 'application/json');
            res = h.send(req);

        catch (Exception e) {


    return res;
  • did you add the end point in remote site setting in your salesforce org? – Sagar Hinsu Jul 3 '18 at 10:54
  • Yes. already added – sumit Jul 3 '18 at 10:58
  • @sagar if we have only client id and client secret then how we write rest webservice? – sumit Jul 3 '18 at 11:00
  • can you show the code what you have tried? – Sagar Hinsu Jul 3 '18 at 11:10
  • @sagar updated question with code i am trying – sumit Jul 3 '18 at 12:32

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