Cannot decrypt original URL

Hi All,

I am getting the dumps in my PI system version "SAP EHP 1 for SAP NetWeaver 7.1" of the following type:

Message: Cannot decrypt original URL: d5ZMa0IkU5jXDmnPn2qtmNfMCcRVbNdntbgZEBr9jasrOS4ZRDwIsf%2FEsZpWApVhXMPblyxCvwM6lb3cVuWK6GIbyK5yzYIi7yKA7jkcZW3FZlql9B2cbGwlLiL4jhjN%2BDtLRnaY244%3D Date: 2012-05-23 Time: 22:47:00:183 Category: com.sap.engine.services.security.authentication.callbackhandler Location: com.sap.engine.services.security.authentication.callbackhandler Application: sap.com/tc~wd~dispwda Thread: Thread[HTTP Worker [@951422579],5,Dedicated_Application_Thread] Data Source: j2ee\cluster\server0\log\defaultTrace_00.trc Arguments: DSR Transaction: Message Code: Session: 0 Transaction: User: J2EE_GUEST Time Zone: 0-700 CSN Component: BC-JAS-SEC DC Component: security Correlation ID: 2696750000000004 DSR Root Context ID: 65138542A56211E1852C00000029262E DSR Connection: DSR Counter: 0 Log ID: Host: System: B1X Instance: de: server0

I hope you can help me out. Thanx in advance.

Regards,

Utsav Mishra