You may want to access custom HTTP request headers. These headers can be inserted by third-party products such as load balancers, application servers, or web server plug-ins. This parameter is assigned the value of the specified HTTP header, which can then be referenced in a Webtrends custom report.
WT.hdr.HTTP Header
WT.hdr.HTTP Header=Value
If the header is present in the incoming request, the header name is appended to WT.hdr. and the header value is assigned to the value. For example, suppose that a customer wants to log the Accept:header, and it comes in as Accept: */*. The resultant parameter would be WT.hdr.Accept=*/*. Note that values are URL encoded.