HTTP Error code 500

Hi ,

I am new to SAP XI area, I was trying to post one xml document from one service(Gentran Integration Suite) to SAP XI. I have correct URV which i used in my buisness process model . When i try that URI in my browser and enter user name and password i can sucessfully login. When i try to run Business process from GIS(gentran Integration Suite) using Http adapter services. I get error Http internal server error 500. Can any body help that what configuration need to be done. THis error is on part of SAP XI or on other application server side.

Thanks to all in advance,

sam70