When you use the HP OpenView Service Desk (OVSD) web-api.jar to write programs that access the OVSD server you should use the same version that the server is using. The obvious question soon becomes, how do I know what version of the web-api.jar do I have. To determine the version of your web-api.jar do the following: 1. Locate the web-api.jar file you are compiling against in your program. 2. Open a command prompt and cd to the directory that contains your web-api.jar, so that it is your current directory. 3. Now type (or copy and paste) java -classpath web-api.jar com.hp.ifc.sys.AppVersionInfo This should return something like: Acronym: SD Version: 4.5.0588.1706 (SP17) Company: hp OpenView Copyright: Copyright (c) 2004 Hewlett-Packard Development Company, L.P. All Rights Reserved. Description: service desk is a family member of the hp OpenView suite. ProductID: B4321 ProductName: hp OpenView service desk If you don't know what version your server is running the easiest way to tell is to open your client software and look at the start up splash page. If you want a more detailed answer like the above info, you can do the following: 1. Execute C:\Program Files\Hewlett-Packard\OpenView\service desk 4.5\client\bin\sd_version.bat by double clicking it. This should return the same thing as you got for the web-api.jar info.