SAP Netweaver Project Gateway Query Error

HEllo Friends,

I have created a Gateway consumption model,when i execute the query method i get the following error.

  <?xml version="1.0" encoding="utf-8" ?>

- <error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">

  <code>/IWFND/CM_IFL/003</code>

  <message xml:lang="en">GW Business Data Provider failed</message>

  <innererror>GW Business Data Provider failed.</innererror>

  </error>

regards

kaushik