Error in netweaver gateway

This is the below error i am getting when my passing the filter as route:

http://vsECI606.pro.coil:8000/sap/opu/odata/sap/ZRTPDBPMC_SRV/DBPMC?$filter=RouteNumber eq '111103'

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

<code>005056A509B11ED1B9BF9F46AA8E82ED</code>

<message xml:lang="en">In the context of Data Services an unknown internal server error occured</message>

</error>

Please help me out in this regard.

thanks in advance