title: amazon Marketplace PHP Pricing api
body: <p>working on PHP amazon marketplace api, to get the products and offers. 
  I'm trying this sample : GetMatchingProductForIdSample.php</p>
  
  <p>I get this error : </p>
  
  <pre><code>Caught Exception: Access to Products.GetMatchingProductForId is denied Response Status Code: 401 Error Code: AccessDenied Error Type: Sender Request ID: 8abfa898-cf9b-448e-8843-44ebb65c560c XML: Sender AccessDenied Access to Products.GetMatchingProductForId is denied 8abfa898-cf9b-448e-8843-44ebb65c560c ResponseHeaderMetadata: RequestId: 8abfa898-cf9b-448e-8843-44ebb65c560c, ResponseContext: Vr9BfReJTpsZptHmpSn3qWIs9jaQyEXRMzCHPIzpLSp4GqT2gEHL02Cj/L2Vrygv47yEL11ksSeS fbdrOlJyxg==, Timestamp: 2014-09-17T15:01:38.384Z, Quota Max: , Quota Remaining: , Quota Resets At:
  </code></pre>
  
  <p>After checking my configuration on the others samples, it appears that my configuration is ok.
  This is the request i'm making, using EAN, but it still doesn't work : </p>
  
  <pre><code>$request = new MarketplaceWebServiceProducts_Model_GetMatchingProductForIdRequest();
  $request-&gt;setSellerId(MERCHANT_ID);
  $request-&gt;setIdType("EAN");
  $list = new MarketplaceWebServiceProducts_Model_IdListType();
  $list-&gt;setId("5039036029667");
  $request-&gt;setIdList($list);
  </code></pre>
  
  <p>Do you have any ideas?</p>