Unique Visitors with Event X higher than pure Event X count

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FraCalzo
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FraCalzo
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17-03-2020

Hi everybody,

 

I found the following strange behavior. I have the event213 that, in February 2020, counts up to 1,228.

Then I made a segment (at a Visitor level) keeping only those visitors who fired event213 at least once. If I check Unique Visitors metric over that segment, i find a number higher than the pure count of event213. How can it be possibile?

Below, a screenshot of February 2020 data:

FraCalzo_0-1584434123346.png

where "[AC] Utilizzo del Calendario" is event213 and "Clienti Utilizzatori del Calendario" is the name of the segment. The segment is simply built as it follows:

FraCalzo_1-1584434267277.png

This is not logical to me.

Could someone explain me this phenomenon? Is it an error?

I appreciate any help on this.

 

Thanks in advance,

Francesco

 

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Andrey_Osadchuk
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Andrey_Osadchuk
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11-04-2020

Hi Francesco,

That really looks odd. My hypothesis is that the [AC] metric could be decreased by offline data ingestion with negative numbers.