Getting Adroid device token SERVICE_NOT_AVAILABLE

I am using following code to get device token, but fails all time saying "SERVICE_NOT_AVAILABLE". At same time it is working for iPhone.

var CloudPush = require('ti.cloudpush');
CloudPush.debug = true;
CloudPush.enabled = true;
CloudPush.showTrayNotificationsWhenFocused = true;
CloudPush.focusAppOnPush = false;
 
//fetch device token
CloudPush.retrieveDeviceToken({
        success : function deviceTokenSuccess(e) {
                deviceToken = e.deviceToken;
                alert('Device Token: ' + deviceToken);
                Ti.API.info('Device Token: ' + e.deviceToken);
        },
        error : function deviceTokenError(e) {
                alert('Failed to register for push! ' + e.error);
        }
});