public static void request(String S,String cd) {
        string customer_code=cd;
        String SalesOrganization=s;
        String username ='****';
        String password ='*****';
        Blob headerValue = Blob.valueOf(username+':'+password);
        String authorizationHeader ='BASIC'+EncodingUtil.base64Encode(headerValue);

        HttpRequest req = new HttpRequest();
        req.setEndpoint('https://da1.camso.co:50001/RESTAdapter/sold_to/batch');
        req.setMethod('POST');
        req.setHeader('Authorization', authorizationHeader);
        req.setBody('SalesOrganization='+EncodingUtil.urlEncode(SalesOrganization, 'UTF-8')+'&customer_code='+EncodingUtil.urlEncode(customer_code, 'UTF-8'));
        req.setCompressed(false); // otherwise we hit a limit of 32000
      try
      {
         HttpResponse res = new Http().send(req);
         system.debug('Response' +res.getBody());
        } catch(System.CalloutException e) {
        System.debug('Callout error: '+ e);
        }
     }