Error in test reservation Expedia Affiliate Network

Question

I have been integrating EAN APIs in one of my android application. But unfortunately I getting following error"

{
        "HotelRoomReservationResponse": {
        "EanWsError": {
        "itineraryId": -1,
        "handling": "UNRECOVERABLE",
        "category": "EXCEPTION",
        "exceptionConditionId": -1,
        "presentationMessage": "TravelNow.com cannot service this request.",
        "verboseMessage": "Exception Caught: null"
        },
        "customerSessionId": "aa3baf02-68a5-498e-84f5-be88c8e9873e"
        }
}

I have verified all the parameters, advised by EAN support, like for test booking 'address1' should be 'travelnow' etc etc, also all mandatory parameters are there I believe.

Reference

Please advise.