The events are all different, from network devices, windows, solaris, linux, hpux so the events don't make any difference as I just want anything going through particular HWF's to have a site code set. This is nothing to do with extracting data to select the site I just want to be able to set "site = Bristol" for example.
eg
HWF 1 & HWF 2 site = BRISTOL
HWF 3 & HWF 4 site = SINGAPORE
HWF 5 & HWF 6 site = NEW-YORK
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