Different Data Sources parse the URL to different fields.
For instance, if you have an APM and enable the DNS rule, the URL's are parsed to the "Host" field.
If you have a McAfee Web Gateway, the URL's are parsed to the "Object" field.
Both of the scenarios above are the main Domain only, not the entire URL string.
my device parse the url in url field but when i try to use event drilldown on dashboard i cannot find the url field .