# Unique Count aggregation returning HIGHER number than Count?

**URL:** <https://discuss.elastic.co/t/unique-count-aggregation-returning-higher-number-than-count/171382>\
**Category:** Kibana\
**Created:** [March 7, 2019, 7:36pm UTC](https://discuss.elastic.co/t/unique-count-aggregation-returning-higher-number-than-count/171382 "2019-03-07T19:36:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![brandondash](https://avatars.discourse-cdn.com/v4/letter/b/76d3ee/32.png) [@brandondash](https://discuss.elastic.co/u/brandondash)\
**Post date:** [March 7, 2019, 7:36pm UTC](https://discuss.elastic.co/t/unique-count-aggregation-returning-higher-number-than-count/171382/1 "2019-03-07T19:36:09Z")

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I can name no logical reason this could happen, and I don't even know how to BEGIN to troubleshoot. Help!!

wut|573x500

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [March 7, 2019, 7:44pm UTC](https://discuss.elastic.co/t/unique-count-aggregation-returning-higher-number-than-count/171382/2 "2019-03-07T19:44:01Z")

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Cardinality aggregations are approximate in order to scale. This is explained in the documentation.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 4, 2019, 7:44pm UTC](https://discuss.elastic.co/t/unique-count-aggregation-returning-higher-number-than-count/171382/3 "2019-04-04T19:44:10Z")

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