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Documents that nested fields aren't supported for Theshold rules "Group by" operations #4683

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Jan 26, 2024
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Documents that nested fields aren't supported for Theshold rules "Group by" operations #4683

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3 changes: 3 additions & 0 deletions docs/detections/rules-ui-create.asciidoc
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Expand Up @@ -108,6 +108,9 @@ alerts.
NOTE: You can use {kib} saved queries (image:images/saved-query-menu.png[Saved query menu,18,18]) and queries from saved Timelines (*Import query from saved Timeline*) as rule conditions.

.. Use the *Group by* and *Threshold* fields to determine which source event field is used as a threshold and the threshold's value.
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NOTE: Nested fields are not supported for use with *Group by*.
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.. Use the *Count* field to limit alerts by cardinality of a certain field.
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For example, if *Group by* is `source.ip, destination.ip` and its *Threshold* is `10`, an alert is generated for every pair of source and destination IP addresses that appear in at least 10 of the rule's search results.
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