title: PayU Payment Gateway - I can't use API PayU Version 2
body: <p>I use Laravel 5 and via composer I install the <strong>Official OpenPayU PHP Library 2.2</strong> (<a href="https://github.com/PayU/openpayu_php" rel="nofollow noreferrer">https://github.com/PayU/openpayu_php</a>)</p>
  
  <p>But this require: MerchantPosId, SignatureKey, OauthClientId and OauthClienteSecret.</p>
  
  <p>And I only have in my merchant admin panel: Api_key, API_login, Public_key, Merchant_Id.</p>
  
  <p>I related: </p>
  
  <ul>
  <li>MerchantPosId = Merchant_Id</li>
  <li>SignatureKey = Api_key</li>
  <li>OauthClientId = Merchant_Id</li>
  <li>OauthClienteSecret = API_login | Api_key</li>
  </ul>
  
  <p>But not working the method <strong>create</strong> or others methods of the class <strong>OpenPayU_Order</strong>
  I get the error:</p>
  
  <blockquote>
    <p>Oauth error: [code=401], [message=invalid_client - Can't find
    oauthClient with clientId = 123445]</p>
  </blockquote>
  
  <p>Will my settings are wrong? Is it necessary to require new?</p>