Refer classes of Microsoft.Office.Policy dll in Custom web service sharepoint

Hi ,

I have created a custom web service which refers to Microsoft.Sharepoint dll and Microsoft.Office.Policy dll.

Added reference tags to these two assemblies in disco file 

deployed this web service to _vti_bin.

An error occurred during the compilation of the requested file, or one of its dependencies. The type or namespace name 'RecordsManagement' does not exist in the namespace 'Microsoft.Office' (are you missing an assembly reference?)

This dll is already in present in GAC not sure where else should we be copying this dll to?

Regards,

Harika

harika kakkireni